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Drosophila is a genus of flies, belonging to the family Drosophilidae, whose members are often called "small fruit flies" or pomace flies, vinegar flies, or wine flies, a reference to the characteristic of many species to linger around overripe or rotting fruit. They should not be confused with the Tephritidae, a related family, which are also called fruit flies ; tephritids feed primarily on unripe or ripe fruit, with many species being regarded as destructive agricultural pests, especially the Mediterranean fruit fly.
Genetics is the study of genes, genetic variation, and heredity in organisms. It is an important branch in biology because heredity is vital to organisms' evolution. Gregor Mendel, a Moravian Augustinian friar working in the 19th century in Brno, was the first to study genetics scientifically. Mendel studied "trait inheritance", patterns in the way traits are handed down from parents to offspring over time. He observed that organisms inherit traits by way of discrete "units of inheritance". This term, still used today, is a somewhat ambiguous definition of what is referred to as a gene.
Alfred Henry Sturtevant was an American geneticist. Sturtevant constructed the first genetic map of a chromosome in 1911. Throughout his career he worked on the organism Drosophila melanogaster with Thomas Hunt Morgan. By watching the development of flies in which the earliest cell division produced two different genomes, he measured the embryonic distance between organs in a unit which is called the sturt in his honor. On February 13, 1968, Sturtevant received the 1967 National Medal of Science from President Lyndon B. Johnson.
A morphogen is a substance whose non-uniform distribution governs the pattern of tissue development in the process of morphogenesis or pattern formation, one of the core processes of developmental biology, establishing positions of the various specialized cell types within a tissue. More specifically, a morphogen is a signaling molecule that acts directly on cells to produce specific cellular responses depending on its local concentration.
Michael Ashburner was an English biologist and Professor in the Department of Genetics at University of Cambridge. He was also the former joint-head and co-founder of the European Bioinformatics Institute (EBI) of the European Molecular Biology Laboratory (EMBL) and a Fellow of Churchill College, Cambridge.
Transvection is an epigenetic phenomenon that results from an interaction between an allele on one chromosome and the corresponding allele on the homologous chromosome. Transvection can lead to either gene activation or repression. It can also occur between nonallelic regions of the genome as well as regions of the genome that are not transcribed.
SMAD4, also called SMAD family member 4, Mothers against decapentaplegic homolog 4, or DPC4 is a highly conserved protein present in all metazoans. It belongs to the SMAD family of transcription factor proteins, which act as mediators of TGF-β signal transduction. The TGFβ family of cytokines regulates critical processes during the lifecycle of metazoans, with important roles during embryo development, tissue homeostasis, regeneration, and immune regulation.
Decapentaplegic (Dpp) is a key morphogen involved in the development of the fruit fly Drosophila melanogaster and is the first validated secreted morphogen. It is known to be necessary for the correct patterning and development of the early Drosophila embryo and the fifteen imaginal discs, which are tissues that will become limbs and other organs and structures in the adult fly. It has also been suggested that Dpp plays a role in regulating the growth and size of tissues. Flies with mutations in decapentaplegic fail to form these structures correctly, hence the name. Dpp is the Drosophila homolog of the vertebrate bone morphogenetic proteins (BMPs), which are members of the TGF-β superfamily, a class of proteins that are often associated with their own specific signaling pathway. Studies of Dpp in Drosophila have led to greater understanding of the function and importance of their homologs in vertebrates like humans.
FlyBase is an online bioinformatics database and the primary repository of genetic and molecular data for the insect family Drosophilidae. For the most extensively studied species and model organism, Drosophila melanogaster, a wide range of data are presented in different formats.
Medea is a gene from the fruit fly Drosophila melanogaster that was one of the first two Smad genes discovered. For both genes, the maternal effect lethality was the basis for selection of their names. Medea was named for the mythological Greek Medea, who killed her progeny fathered by Jason.
Temple Ferris Smith is an emeritus professor in biomedical engineering who helped to develop the Smith-Waterman algorithm with Michael Waterman in 1981. The Smith-Waterman algorithm serves as the basis for multi sequence comparisons, identifying the segment with the maximum local sequence similarity, see sequence alignment. This algorithm is used for identifying similar DNA, RNA and protein segments. He was director of the BioMolecular Engineering Research Center at Boston University for twenty years and is now professor emeritus.
Gerald Mayer Rubin is an American biologist, notable for pioneering the use of transposable P elements in genetics, and for leading the public project to sequence the Drosophila melanogaster genome. Related to his genomics work, Rubin's lab is notable for development of genetic and genomics tools and studies of signal transduction and gene regulation. Rubin also serves as a vice president of the Howard Hughes Medical Institute and executive director of the Janelia Research Campus.
Serine-threonine kinase receptor-associated protein is an enzyme that in humans is encoded by the STRAP gene.
Martin Edward Kreitman is an American geneticist at the University of Chicago, most well known for the McDonald–Kreitman test that is used to infer the amount of adaptive evolution in population genetic studies.
John R. Carlson is an American biologist and professor. He currently holds the Eugene Higgins Professor of Molecular, Cellular, and Developmental Biology at Yale University. He is an elected member of the National Academy of Sciences.
Chao-ting Wu is an American molecular biologist. After training at Harvard Medical School in genetics with William Gelbart, at Stanford Medical School with David Hogness, and in a fellowship at Massachusetts General Hospital in molecular biology, Wu began her independent academic career as an assistant professor in Anatomy and Cellular Biology and then Genetics at Harvard Medical School in 1993. After a period as Professor of Pediatrics in the Division of Molecular Medicine at the Boston Children's Hospital, she returned to the Department of Genetics at Harvard Medical School as a full professor in 2007.
Peter D. Keightley FRS is Professor of Evolutionary Genetics at the Institute of Evolutionary Biology in School of Biological Sciences at the University of Edinburgh.
Lingadahalli Subrahmanya Shashidhara is an Indian developmental biologist, geneticist and a professor of biology currently serving as the Centre Director of National Centre for Biological Sciences, Bengaluru, India. He is a Professor at the Indian Institute of Science Education and Research, Pune, and at Ashoka University, Sonepat, India. He heads the LSS Laboratory at IISER and is known for his studies on Drosophila, particularly the evolution of appendages and functions of homeotic selector genes. He is a J. C. Bose National Fellow of the Department of Science and Technology and an elected fellow of the Indian National Science Academy, Indian Academy of Sciences and the National Academy of Sciences, India. The Council of Scientific and Industrial Research, the apex agency of the Government of India for scientific research, awarded him the Shanti Swarup Bhatnagar Prize for Science and Technology, one of the highest Indian science awards, in 2008, for his contributions to biological sciences.
Vivian Irish is an American evolutionary biologist. She is currently Chair & Eaton Professor of Molecular, Cellular and Developmental Biology and Professor of Ecology and Evolutionary Biology at Yale University. Her research focuses on floral development. She was president of Society for Developmental Biology in 2012 and currently serves as an editor for the journals Developmental Biology and Evolution & Development.
Gary Struhl is an American research scientist whose primary areas of research are developmental biology and genetics and genomics. He works as a professor at Columbia University Medical Center, teaching neuroscience within the Department of Genetics and Development.
References
- 1 2 3 "WILLIAM M. GELBART SEPTEMBER 11, 1945 - AUGUST 11, 2015". Harvard University - Department of Molecular & Cellular Biology. 20 October 2015.
- 1 2 Wharton, Kristi (December 2015). "William Martin Gelbart 1945–2015". Nature Genetics. 47 (12): 1372. doi: 10.1038/ng.3455 . PMID 26620108.
- ↑ says, Genes to Genomes: a blog from the Genetics Society of America (16 August 2015). "In Memoriam: Bill Gelbart". Genes to Genomes.
- ↑ Matthew Meselson, Norbert Perrimon and Daniel Hartl (Chair). "Tribute to the life and service of William M. Gelbert", Harvard.edu website, 2 February 2016.
- ↑ Spencer, Forrest A.; Hoffmann, F.Michael; Gelbart, William M. (March 1982). "Decapentaplegic: A gene complex affecting morphogenesis in Drosophila melanogaster". Cell. 28 (3): 451–461. doi:10.1016/0092-8674(82)90199-4. PMID 6804094. S2CID 24558891.