Y-chromosomal Aaron is the name given to the hypothesized most recent common ancestor of the patrilineal Jewish priestly caste known as Kohanim (singular "Kohen", also spelled "Cohen"). According to the traditional understanding of the Hebrew Bible, this ancestor was Aaron, the brother of Moses. A historical-critical reading of the biblical text suggests that the origin of the priesthood could have been much more complex, and that for much if not all of the First Temple period, kohen may have not (necessarily) synonymous with "Aaronide". Rather, this traditional identity seems to have been adopted sometime around the second temple period. [1] [2] [3]
The original scientific research was based on the hypothesis that a majority of present-day Jewish Kohanim share a pattern of values for six Y-STR markers, which researchers named the extended Cohen Modal Haplotype (CMH). [4] Subsequent research using twelve Y-STR markers indicated that nearly half of contemporary Jewish Kohanim shared Y-chromosomal J1 M267 (specifically haplogroup J-P58, also called J1c3), while other Kohanim share a different ancestry, such as haplogroup J2a (J-M410). [5]
While these genetic studies were seen as possibly supporting the traditional biblical narrative, subsequent research (by the original researchers and others) has challenged this conclusion in a number of ways and has in fact shown that the genealogical record "refutes the idea of a single founder for Jewish Cohanim who lived in Biblical times", [6] [7] [2] [8] [9] [10] [11] and rather "seems to vindicate the historical-critical hypothesis of competing priestly clans." [2]
For human beings, the normal number of chromosomes is 46, of which 23 are inherited from each parent. Two chromosomes, the X and Y, determine sex. Females have two X chromosomes, one inherited from each of their parents. Males have an X chromosome inherited from their mother, and a Y chromosome inherited from their father.
Males who share a common patrilineal ancestor also share a common Y chromosome, diverging only with respect to accumulated mutations. Since Y-chromosomes are passed from father to son, all Kohanim men should theoretically have nearly identical Y chromosomes; this can be assessed with a genealogical DNA test. As the mutation rate on the Y chromosome is relatively constant, scientists can estimate the elapsed time since two men had a common ancestor.
Although Jewish identity has traditionally (according to rabbinic-Jewish law I.E. since around the 1st century CE) been passed by matrilineal descent, membership in the Jewish Kohanim caste has been determined by patrilineal descent (see Presumption of priestly descent). Modern Kohanim are traditionally regarded in Judaism as male descendants of biblical Aaron, a direct patrilineal descendant of Abraham, according to the lineage recorded in the Hebrew Bible (שמות / Sh'mot/Exodus 6).
With the development of methods to follow specific DNA sequences of the human genome, interest in the Cohanim (and Levites) has gained new momentum as an instrument for proof of the common origins of the current Jewish ethnic-groups in the population of the Land of Israel two thousand years ago, as narrated in the biblical story. [12] Skorecki, who carried out the initial study, told the journalist Jon Entine, "I was interested in the question: To what extent was our shared oral tradition matched by other evidence?" [13] [14]
The Kohen hypothesis was first tested through DNA analysis in 1997 by Prof. Karl Skorecki and collaborators from Haifa, Israel. In their study, "Y chromosomes of Jewish priests," published in the journal Nature, [15] they found that the Kohanim appeared to share a different probability distribution compared to the rest of the Jewish population for the two Y-chromosome markers they tested (YAP and DYS19). They also found that the probabilities appeared to be shared by both Sephardic and Ashkenazi Kohens, pointing to a common Kohen population origin before the Jewish diaspora at the destruction of the Second Temple. However, this study also indicated that only 48% of Ashkenazi Kohens and 58% of Sephardic Kohens have the J1 Cohen Modal Haplotype. Such genetic markers were also found in approximately 5% of Jews who did not believe themselves to be kohanim. [15]
In a subsequent study the next year (Thomas MG et al., 1998), [4] the team increased the number of Y-STR markers tested to six, as well as testing more SNP markers. Again, they found that a clear difference was observable between the Kohanim population and the general Jewish population, with many of the Kohen STR results clustered around a single pattern they named the Kohen Modal Haplotype:
xDE [15] | xDE,PR [4] | Hg J [16] | CMH.1 [4] | CMH [4] | CMH.1/HgJ | CMH/HgJ | ||
---|---|---|---|---|---|---|---|---|
Ashkenazi Cohanim (AC): | 98.5% | 96% | 87% | 69% | 45% | 79% | 52% | |
Sephardic Cohanim (SC): | 100% | 88% | 75% | 61% | 56% | 81% | 75% | |
Ashkenazi Jews (AI): | 82% | 62% | 37% | 15% | 13% | 40% | 35% | |
Sephardic Jews (SI): | 85% | 63% | 37% | 14% | 10% | 38% | 27% |
Here, becoming increasingly specific, xDE is the proportion who were not in Haplogroups D or E (from the original paper); xDE,PR is the proportion who were not in haplogroups D, E, P, Q or R; Hg J is the proportion who were in Haplogroup J (from the slightly larger panel studied by Behar et al. (2003) [16] ); CMH.1 means "within one marker of the CMH-6"; and CMH is the proportion with a 6/6 match. The final two columns show the conditional proportions for CMH.1 and CMH, given membership of Haplogroup J.
The data show that the Kohanim were more than twice as likely to belong to Haplogroup J than the average non-Cohen Jew. Of those who did belong to Haplogroup J, the Kohanim were more than twice as likely to have an STR pattern close to the CMH-6, suggesting a much more recent common ancestry for most of them compared to an average non-Kohen Jew of Haplogroup J.
Thomas, et al. dated the origin of the shared DNA to approximately 3,000 years ago (with variance arising from different generation lengths). The techniques used to find Y-chromosomal Aaron were first popularized in relation to the search for the patrilineal ancestor of all contemporary living humans, Y-chromosomal Adam.
Subsequent calculations under the coalescent model for J1 haplotypes bearing the Cohanim motif gave time estimates that place the origin of this genealogy around 6,200 years ago (95% CI: 4.5–8.6 Kybp), earlier than previously thought, and well before the origin of Judaism (David Kingdom, ~2.0 Kybp). [17]
The finding led to excitement in religious circles, with some seeing it as providing some proof of the historical veracity of the priestly covenant or other religious convictions. [2] [13] [12] [18] [19]
Following the discovery of the very high prevalence of 6/6 CMH matches amongst Kohanim, other researchers and analysts were quick to look for it. Some groups have taken the presence of this haplotype as indicating possible Jewish ancestry, although the chromosome is not exclusive to Jews. It is widely found among other Semitic peoples of the Middle East. [13]
Early research suggested that the 6/6 matches found among male Lemba of Southern Africa confirmed their oral history of descent from Jews and connection to Jewish culture. [20] Later research has been unable to confirm this (due to the fact that CMH was widely found among other Semitic peoples of the Middle East) although it has shown that some male Lemba have Middle Eastern ancestry. [13] [21] [22] [23]
Critics such as Avshalom Zoossmann-Diskin suggested that the paper's evidence was being overstated in terms of showing Jewish descent among these distant populations. [24] [19]
One source of early confusion was the low resolution of the available tests. The Cohen Modal Haplotype (CMH), while frequent amongst Kohanim, also appeared in the general populations of haplogroups J1 and J2 with no particular link to the Kohen ancestry. These haplogroups occur widely throughout the Middle East and beyond. [25] [26] [13] [23] [19] Thus, while many Kohanim have haplotypes close to the CMH, a greater number of such haplotypes worldwide belong to people with no apparent connection to the Jewish priesthood.
Individuals with at least 5/6 matches for the original 6-marker Cohen Modal Haplotype are found across the Middle East, with significant frequencies among various Arab populations, mainly those with the J1 Haplogroup. These have not been "traditionally considered admixed with mainstream Jewish populations" – the frequency of the J1 Haplogroup is the following: Yemen (34.2%), Oman (22.8%), Negev (21.9%), and Iraq (19.2%); and amongst Muslim Kurds (22.1%), Bedouins (21.9%), and Armenians (12.7%). [27]
On the other hand, Jewish populations were found to have a "markedly higher" proportion of full 6/6 matches, according to the same (2005) meta-analysis. [27] This was compared to these non-Jewish populations, where "individuals matching at only 5/6 markers are most commonly observed." [27]
The authors Elkins, et al. warned in their report that "using the current CMH definition to infer relation of individuals or groups to the Cohen or ancient Hebrew populations would produce many false-positive results," and note that "it is possible that the originally defined CMH represents a slight permutation of a more general Middle Eastern type that was established early on in the population prior to the divergence of haplogroup J. Under such conditions, parallel convergence in divergent clades to the same STR haplotype would be possible." [27]
Cadenas et al. analysed Y-DNA patterns from around the Gulf of Oman in more detail in 2007. [28] The detailed data confirm that the main cluster of haplogroup J1 haplotypes from the Yemeni appears to be some genetic distance from the CMH-12 pattern typical of eastern European Ashkenazi Kohanim, but not of Sephardic Kohanim.
While there is evidence from Josephus and rabbinic sources that this tradition existed [I.E. was practiced and believed] by the end of the Second Temple (1st century CE, nearly a millennium and a half after the tradition places Aaron), there is no further evidence to support its historicity. According to modern biblical scholarship, a historical-critical reading of the biblical text suggests that the origin of the priesthood is much more complex, and that for much if not all of the First Temple period, kohen was not (necessarily) synonymous with "Aaronide". Rather, this traditional identity seems to have been adopted sometime around the second temple period. [1] [2] [3]
Even within the Jewish Kohen population, it became clear that there were multiple Kohen lineages, including distinctive lineages both in Haplogroup J1 and in haplogroup J2. [29] [5] [13] [2] [30] Other groups of Jewish lineages (i.e. Jews who are non-kohanim) and even non-Jews were found in Haplogroup J2 that matched the original 6-marker CMH, but which were unrelated and not associated with Kohanim. [13] [23] [19] Current estimates, based on the accumulation of SNP mutations, place the defining mutations that distinguish haplogroups J1 and J2 as having occurred about 20 to 30,000 years ago. [13]
Subsequent research (by the original researchers and others) has challenged the original conclusion in a number of ways and has in fact shown that the genealogical record "refutes the idea of a single founder for Jewish Cohanim who lived in Biblical times." [13] [23] [2] [31] [32] [30] [19]
A 2009 academic study by Michael F. Hammer, Doron M. Behar, et al. examined more STR markers in order to sharpen the "resolution" of these Kohanim genetic markers, thus separating both Ashkenazi and other Jewish Kohanim from other populations, and identifying a more sharply defined SNP haplogroup, J1e* (now J1c3, also called J-P58*) for the J1 lineage. The research found "that 46.1% of Kohanim carry Y chromosomes belonging to a single paternal lineage (J-P58*) that likely originated in the Near East well before the dispersal of Jewish groups in the Diaspora. Support for a Near Eastern origin of this lineage comes from its high frequency in our sample of Bedouins, Yemenis (67%), and Jordanians (55%) and its precipitous drop in frequency as one moves away from Saudi Arabia and the Near East (Fig. 4). Moreover, there is a striking contrast between the relatively high frequency of J-58* in Jewish populations (»20%) and Kohanim (»46%) and its vanishingly low frequency in our sample of non-Jewish populations that hosted Jewish diaspora communities outside of the Near East." [5] The authors state, in their "Abstract" to the article:
However, the study did not support a single Y-chromosomal Aaron from the biblical period, rather it showed a "limited number of paternal lineages" from around that period. [2] [30] Subsequent analysis found that even the "extended Cohen Modal Haplotype" probably split off from an older Cohen haplotype far more recently, less than 1,500 years ago. [33] [19]
Behar's 2003 data [16] point to the following Haplogroup distribution for Ashkenazi Kohanim (AC) and Sephardic Kohanim (SC) as a whole:
Hg: | E3b | G2c | H | I1b | J | K2 | Q | R1a1 | R1b | Total | |
---|---|---|---|---|---|---|---|---|---|---|---|
AC | 3 | 0 | 1 | 0 | 67 | 2 | 0 | 1 | 2 | 76 | |
4% | 1½% | 88% | 2½% | 1½% | 2½% | 100% | |||||
SC | 3 | 1 | 0 | 1 | 52 | 2 | 2 | 3 | 4 | 68 | |
4½% | 1½% | 1½% | 76% | 3% | 3% | 4½% | 6% | 100% |
The detailed breakdown by 6-marker haplotype (the paper's Table B, available only online) suggests that at least some of these groups (e.g. E3b, R1b) contain more than one distinct Kohen lineage. It is possible that other lineages may also exist, but were not captured in the sample.
Hammer et al. (2009) identified Cohanim from diverse backgrounds, having in all 21 differing Y-chromosome haplogroups: E-M78, E-M123, G-M285, G-P15, G-M377, H-M69, I-M253, J-P58, J-M172*, J-M410*, J-M67, J-M68, J-M318, J-M12, L-M20, Q-M378, R-M17, R-P25*, R-M269, R-M124 AND T-M70. [5]
Similar investigation was made of males who identify as Levites. The priestly Kohanim are believed to have descended from Aaron (among those who believe he was a historical figure). He was a descendant of Levi, son of Jacob. The Levites comprised a lower rank of the Temple priests. They are considered descendants of Levi through other lineages. Levites should also therefore in theory share common Y-chromosomal DNA.
However, similar studies into Levite origins found the Levite genome to be significantly less homogeneous. While commonalities were found within the Ashkenazi-Levite genome (R1a-Y2619), no haplotype frequently common to Levites in general [I.E. Ashkenazi & Sephardi] was found. [13] [34] [12] Additionally, the haplotype that was commonly found in Ashkenazi Levites is of a relatively recent origin from a single common ancestor estimated to have lived around 1.5–2.5 thousand years ago. [13] [16] [35] Also, when further compared to the most frequent founding lineage found among Ashkenazi Cohen males, [36] it was found that they do not share a common male ancestor within the time frame of the Biblical narrative. [32] Finally, it is unclear whether the origin is Eastern Europe or the greater Middle East region (including Iran); [12] however, the most recent findings indicate the latter.
The 2003 Behar et al. investigation of Levites found high frequencies of multiple distinct markers, suggestive of multiple origins for the majority of non-Aaronid Levite families. One marker, however, present in more than 50% of Eastern European (Ashkenazi) Jewish Levites, points to a common male ancestor or very few male ancestors within the last 2000 years for many Levites of the Ashkenazi community. This common ancestor belonged to the haplogroup R1a1, which is typical of Eastern Europeans or West Asians, rather than the haplogroup J of the Cohen modal haplotype. The authors proposed that the Levite ancestor(s) most likely lived at the time of the Ashkenazi settlement in Eastern Europe, and would thus be considered founders of this line. [16] [37] [35] further speculating that the ancestor(s) were unlikely to have descended from Levites of the Near East.
However, a Rootsi, Behar, et al. study published online in Nature Communications in December 2013 disputed the previous conclusion. Based on its research into 16 whole R1 sequences, the team determined that a set of 19 unique nucleotide substitutions defines the Ashkenazi R1a lineage. One of these is not found among Eastern Europeans, but the marker was present "in all sampled R1a Ashkenazi Levites, as well as in 33.8% of other R1a Ashkenazi Jewish males, and 5.9% of 303 R1a Near Eastern males, where it shows considerably higher diversity." [38] Rootsi, Behar, et al., concluded that this marker most likely originates in the pre-Diasporic Hebrews in the Middle East. However, they agreed that the data indicates an origin from a single common ancestor. [38]
The Samaritan community in the Middle East survives as a distinct religious and cultural sect. It constitutes the oldest and smallest ethnic minorities in the Middle East, numbering slightly more than 800 members. According to Samaritan accounts, Samaritan Kohanim are descended from Levi, the Tsedaka clan is descended from Manasseh, while the Dinfi clan and the Marhiv clan are descended from Ephraim. [39] Samaritans claim that the southern tribes of the House of Judah left the original worship as set forth by Joshua, and the schism took place in the twelfth century BCE at the time of Eli. [40] The Samaritans have maintained their religion and history to this day, and claim to be the remnant of the House of Israel, specifically of the tribes of Ephraim and Manasseh with priests of the line of Aaron/Levi.
Since the Samaritans have maintained extensive and detailed genealogical records for the past 13–15 generations (approximately 400 years) and further back, researchers have constructed accurate pedigrees and specific maternal and paternal lineages. A 2004 Y-Chromosome study concluded that the lay Samaritans belong to haplogroups J1 and J2, while the Samaritan Kohanim belong to haplogroup E-M35. [41]
"The Samaritan M267 lineages differed from the classical Cohen modal haplotype at DYS391, carrying 11 rather than 10 repeats", as well as, have a completely different haplogroup, which should have been "J1". Samaritan Kohanim descend from a different patrilineal family line, having haplogroup E1b1b1a (M78) (formerly E3b1a). [41]
Levites or Levi are Jewish males who claim patrilineal descent from the Tribe of Levi. The Tribe of Levi descended from Levi, the third son of Jacob and Leah. The surname Halevi, which consists of the Hebrew definite article "ה" Ha- ('the') plus Levi ('Levite'), is not conclusive regarding being a Levite; a titular use of HaLevi indicates being a Levite. The daughter of a Levite is a Bat Levi.
Kohen is the Hebrew word for "priest", used in reference to the Aaronic priesthood, also called Aaronites or Aaronides. They are traditionally believed, and halakhically required, to be of direct patrilineal descent from the biblical Aaron, brother of Moses, and thus belong to the Tribe of Levi.
The Lemba, Remba, or Mwenye are an ethnic group which is native to South Africa, Malawi, Mozambique and Zimbabwe of mixed Bantu and Yemeni heritage. Within South Africa, they are particularly concentrated in the Limpopo province and the Mpumalanga province.
A genealogical DNA test is a DNA-based genetic test used in genetic genealogy that looks at specific locations of a person's genome in order to find or verify ancestral genealogical relationships, or to estimate the ethnic mixture of an individual. Since different testing companies use different ethnic reference groups and different matching algorithms, ethnicity estimates for an individual vary between tests, sometimes dramatically.
The Thirteenth Tribe is a 1976 book by Arthur Koestler advocating the Khazar hypothesis of Ashkenazi ancestry, the thesis that Ashkenazi Jews are not descended from the historical Judeans and Israelites of antiquity, but from Khazars, a Turkic people who allegedly mass-converted to Judaism. Koestler hypothesized that the Khazars after their conversion in the 8th century migrated westwards into Eastern Europe in the 12th and 13th centuries when the Khazar Empire was collapsing.
Several groups of people have claimed lineal descent from the Israelites, an ancient Semitic-speaking people who inhabited Canaan during the Iron Age. The phenomenon has become especially prevalent since the founding of the State of Israel in 1948. The country's Law of Return, which defines Jewishness for the purpose of aliyah, prompted many individuals to claim Israelite ancestry with the expectation that it would make them eligible for Israeli citizenship through their perceived Jewish ethnicity. The abundance of these claims has led to the rise of the question of "who is a Jew?" in order to determine the legitimacy of one's Jewish identity. Some of these claims have been recognized, while other claims are still under review, and others have been outright rejected.
Haplogroup J-M304, also known as J, is a human Y-chromosome DNA haplogroup. It is believed to have evolved in Western Asia. The clade spread from there during the Neolithic, primarily into North Africa, the Horn of Africa, the Socotra Archipelago, the Caucasus, Europe, Anatolia, Central Asia, South Asia, and Southeast Asia.
E-M215 or E1b1b, formerly known as E3b, is a major human Y-chromosome DNA haplogroup. E-M215 has two basal branches, E-M35 and E-M281. E-M35 is primarily distributed in North Africa and the Horn of Africa, and occurs at moderate frequencies in the Middle East, Europe, and Southern Africa. E-M281 occurs at a low frequency in Ethiopia.
Haplogroup R, or R-M207, is a Y-chromosome DNA haplogroup. It is both numerous and widespread among modern populations.
Haplogroup J-M267, also commonly known as Haplogroup J1, is a subclade (branch) of Y-DNA haplogroup J-P209 along with its sibling clade haplogroup J-M172.
Haplogroup G-M377 is a Y-chromosome haplogroup defined by the presence of the M377 mutation. It is a subclade of Haplogroup G2b-M3115, which in turn is defined by the M3115 mutation.
Cohen is a surname of Jewish, Samaritan and Biblical origins. It is a very common Jewish surname. Cohen is one of the four Samaritan last names that exist in the modern day. Many Jewish immigrants entering the United States or United Kingdom changed their name from Cohen to Cowan, as Cowan was a Scottish name. The name "Cohen" is also used as a given name.
A modal haplotype is an ancestral haplotype derived from the DNA test results of a specific group of people, using genetic genealogy.
The various ethnolinguistic groups found in the Caucasus, Central Asia, Europe, the Middle East, North Africa and/or South Asia demonstrate differing rates of particular Y-DNA haplogroups.
In human mitochondrial genetics, Haplogroup K1a1b1a is a human mitochondrial DNA (mtDNA) haplogroup.
Genetic studies of Jews are part of the population genetics discipline and are used to analyze the ancestry of Jewish populations, complementing research in other fields such as history, linguistics, archaeology, and paleontology. These studies investigate the origins of various Jewish ethnic divisions. In particular, they examine whether there is a common genetic heritage among them. The medical genetics of Jews are studied for population-specific diseases.
Haplogroup G is found at modest percentages amongst Jewish men within multiple subgroups of haplogroup G (Y-DNA), with the majority falling within the G2b and G2c category. Haplogroups that are more commonly found amongst Jews are Haplogroups T, E and J. Jewish ethnic divisions, ranging from about a fifth of Moroccan Jews to almost none reported among the Indian, Yemenite and Iranian communities.
Listed here are notable ethnic groups and populations from Western Asia, Egypt and South Caucasus by human Y-chromosome DNA haplogroups based on relevant studies. The samples are taken from individuals identified with the ethnic and linguistic designations in the first two columns, the third column gives the sample size studied, and the other columns give the percentage of the particular haplogroup. Some old studies conducted in the early 2000s regarded several haplogroups as one haplogroup, e.g. I, G and sometimes J were haplogroup 2, so conversion sometimes may lead to unsubstantial frequencies below.
The Khazar hypothesis of Ashkenazi ancestry, often called the Khazar myth by its critics, is a largely abandoned historical hypothesis that postulated that Ashkenazi Jews were primarily, or to a large extent, descended from Khazars, a multi-ethnic conglomerate of mostly Turkic peoples who formed a semi-nomadic khanate in and around the northern and central Caucasus and the Pontic–Caspian steppe. The hypothesis also postulated that after collapse of the Khazar empire, the Khazars fled to Eastern Europe and made up a large part of the Jews there. The hypothesis draws on medieval sources such as the Khazar Correspondence, according to which at some point in the 8th–9th centuries, a small number of Khazars were said by Judah Halevi and Abraham ibn Daud to have converted to Rabbinic Judaism. The scope of the conversion within the Khazar Khanate remains uncertain, but the evidence used to tie the subsequent Ashkenazi communities to the Khazars is meager and subject to conflicting interpretations.
1 Chronicles 6 is the sixth chapter of the Books of Chronicles in the Hebrew Bible or the First Book of Chronicles in the Old Testament of the Christian Bible. The book is compiled from older sources by an unknown person or group, designated by modern scholars as "the Chronicler", and had the final shape established in late fifth or fourth century BCE. This chapter focuses on the tribe of Levi, divided into the line of the high priests ; the three lines of the families Gershom, Kohath, and Merari ; the lines of the musicians/singers ; duties of Levites and priests ; list of high priests and the Aaronites' and Levites' settlements. It belongs to the section focusing on the list of genealogies from Adam to the lists of the people returning from exile in Babylon.
Skorecki's study generated much excitement in the wider Jewish community, as it was seen as vindicating at least one aspect of the historicity of the Hebrew Bible... recent research on the Cohen Modal Haplotype seems to vindicate the historical-critical hypothesis of competing priestly clans
the first priests were not necessarily from the levite tribe, though several dynasties of priests did descend from this tribe... in the temples the right to officiate as priests was reserved for specific families which generally traced their lineage to the tribe of Levi.
We do not know if Aaron actually existed, but there is evidence from Josephus and rabbinic sources that priestly status was transmitted from father to son in the time of the Second Temple and the following centuries.
Originally, however, the story presented YHWH's selection of the tribe of Levi as his priestly caste... According to this verse [Deut 10:8] (see also Deut 18:1-8; 33:8-10), YHWH chose the entire tribe of Levi from all the other tribes to serve as priests before him... Num 17, which presented the Levites, not the Aaronides, as the chosen priests.
...the historical process by which the Aaronides became a separate class among the Levites and superior to them... Deuteronomy, for example, does not seem to differentiate priests from Levites... No separate group of kohanim seems to exist, nor is the priesthood associated with Aaron or his descendants in the Deuteronomic corpus.
The Korah story reflects part of the history of the growth of the priesthood. Korah's complaint harks back to a recollection that the elevated role of Aaron and his sons was once the role of all Levites.
This finding generated considerable excitement, because it was taken as evidence of the fidelity of an oral tradition extending over millennia... it has been discovered this Y-chromosomal set of markers is not unique to Jewish men... this record refutes the idea of a single founder for Jewish Cohanim who lived in Biblical times... Y-chromosomal analysis of Levites has demonstrated multiple origins that depend on the Diaspora community from which they came—they are not all the descendants of tribal founder Levi.
In conclusion... the overall substantial polyphyletism as well as their systematic occurrence in non-Jewish groups highlights the lack of support for using them either as markers of Jewish ancestry or Biblical tales.
This reasoning also characterizes the decade old pursuit of "Cohen" and "Levite", markers. Although dispelled on numerous occasions (Zoossmann-Diskin, 2006; Klyosov, 2009; Tofanelli et al., 2009), the pursuit for priestly biomarkers continued relentlessly to this day
members of the R1a-Y2619 Levite caste and the J1a-P58 Cohen caste do not share a common male ancestor within the time frame of the Biblical narrative.
In sum, the presence of the J-P58* haplogroup is a marker of Middle Eastern ancestry, and the more specific Extended CMH is a marker of Kohanim ancestry. Of course, many Kohanim have other Y-chromosome haplotypes, so there is not a one-to-one correlation, and there was probably more than one founding male lineage for the Kohanim.
Subsequent research has challenged this conclusion in a number of ways. One big problem is that the Cohen Modal Haplotype is found not only in priests but also among non-Jewish populations in Africa, the Middle East, and Europe. At first there were efforts to suggest such populations might also be descendant from the Hebrews, as in the famous case of the Lemba, an African tribe in Southern Africa (more about them a bit later). But it has since become clear that the original Cohen Modal Haplotype might have been common among Middle Eastern populations, not exclusive to the Jews or their Israelite ancestors... the extended Cohen Modal Haplotype, the version that is supposed to distinguish Jewish priests, probably split off from an older Cohen haplotype far more recently than earlier geneticists concluded. Beyond the question of when the split occurred, the authors of this study make a larger point: figuring out the right mutation rate to apply is a hotly contested issue; mutation rates are not constant in the real world, and the longer the time span to a common ancestor, the harder it is to pinpoint a distinctive genetic signature or to accurately estimate the amount of time involved.
interest in the Cohanim (and Levites) has gained new momentum as an instrument for proof of the common origins of the current Jewish ethnic groups in the population of the Land of Israel two thousand years ago, as narrated in the biblical story... These results appear to be a striking confirmation of the oral tradition). However, not all data accorded with these findings... Although no haplotype frequently common to Levites was found, a cluster of haplotypes with a high degree of relatedness was found among the Ashkenazi Levites... According to Kevin Brook.. the Ashkenazi variety of R1a1 comes from the Asian continental branch, the origins of which are believed to be in ancient Iran rather than in the European branch of the Slavic Belarusians Sorbs... Behar and his associates... point out, however, that the Levite cluster of the R-M17 haplotype is very common in non-Jewish populations of North Eastern Europe. It is reasonable to assume that the origin of the Jewish haplotypes is in non-Jewish Europeans, some of whose male progeny acquired the name (and status) of Levites.
This finding generated considerable excitement, because it was taken as evidence of the fidelity of an oral tradition extending over millennia... it has been discovered this Y-chromosomal set of markers is not unique to Jewish men... this record refutes the idea of a single founder for Jewish Cohanim who lived in Biblical times... Y-chromosomal analysis of Levites has demonstrated multiple origins that depend on the Diaspora community from which they came—they are not all the descendants of tribal founder Levi.
the existence of the CMH along with its dating range were suggestive enough to lead the public to mistake the genetic findings as scientific evidence that cohanim were descendant from Aaron himself.
Subsequent research has challenged this conclusion in a number of ways. One big problem is that the Cohen Modal Haplotype is found not only in priests but also among non-Jewish populations in Africa, the Middle East, and Europe. At first there were efforts to suggest such populations might also be descendant from the Hebrews, as in the famous case of the Lemba, an African tribe in Southern Africa (more about them a bit later). But it has since become clear that the original Cohen Modal Haplotype might have been common among Middle Eastern populations, not exclusive to the Jews or their Israelite ancestors... the extended Cohen Modal Haplotype, the version that is supposed to distinguish Jewish priests, probably split off from an older Cohen haplotype far more recently than earlier geneticists concluded. Beyond the question of when the split occurred, the authors of this study make a larger point: figuring out the right mutation rate to apply is a hotly contested issue; mutation rates are not constant in the real world, and the longer the time span to a common ancestor, the harder it is to pinpoint a distinctive genetic signature or to accurately estimate the amount of time involved.
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: CS1 maint: DOI inactive as of November 2024 (link)In conclusion... the overall substantial polyphyletism as well as their systematic occurrence in non-Jewish groups highlights the lack of support for using them either as markers of Jewish ancestry or Biblical tales.
In sum, the presence of the J-P58* haplogroup is a marker of Middle Eastern ancestry, and the more specific Extended CMH is a marker of Kohanim ancestry. Of course, many Kohanim have other Y-chromosome haplotypes, so there is not a one-to-one correlation, and there was probably more than one founding male lineage for the Kohanim.
This reasoning also characterizes the decade old pursuit of "Cohen" and "Levite", markers. Although dispelled on numerous occasions (Zoossmann-Diskin, 2006; Klyosov, 2009; Tofanelli et al., 2009), the pursuit for priestly biomarkers continued relentlessly to this day
Remarkably, the five Ashkenazi Cohen samples formed the tight cluster J1b-B877, shared only with one Yemenite, one Bulgarian and one Moroccan Cohen coalescing ~2,570 ybp (Table 1).
A common ancestor of all 99 Cohanim lived 1,075 ±130 ybp, and this timing is reproducible for 9-, 12-, 17-, 22- and 67-marker haplotypes. A much higher values of 3,190 ±1,090 and 3,000 ±1,500 ybp were obtained in the cited paper (Hammer et al. 2009) using incorrect methods and incorrect mutation rates. A common ancestor of all the 99 J1e* Cohanim lived around the tenth century AD... An emphasis of the cited paper on the conclusion that an extended CMH on the J1e*-P58* background that …is remarkably absent in non-Jews and having the estimated divergence time of this lineage…3,190 ±1,090 years is incorrect regarding the divergence time. It is more understandable why the lineage originated only 1,075 ±130 years ago is remarkably absent in non-Jews
No haplotype frequently common to Levites was found