| Geminaria pellucida | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Diptera |
| Family: | Bombyliidae |
| Genus: | Geminaria |
| Species: | G. pellucida |
| Binomial name | |
| Geminaria pellucida Coquillett, 1894 | |
Geminaria pellucida is a species of bee flies in the family Bombyliidae. [1] [2] [3] [4]
During fertilization, a sperm must first fuse with the plasma membrane and then penetrate the female egg cell to fertilize it. Fusing to the egg cell usually causes little problem, whereas penetrating through the egg's hard shell or extracellular matrix can be more difficult. Therefore, sperm cells go through a process known as the acrosome reaction, which is the reaction that occurs in the acrosome of the sperm as it approaches the egg. The acrosome is a cap-like structure over the anterior half of the sperm's head.
The zona pellucida is a glycoprotein layer surrounding the plasma membrane of mammalian oocytes. It is a vital constitutive part of the oocyte. The zona pellucida first appears in unilaminar primary oocytes. It is secreted by both the oocyte and the ovarian follicles. The zona pellucida is surrounded by the corona radiata. The corona is composed of cells that care for the egg when it is emitted from the ovary.
Human fertilization is the union of a human egg and sperm, occurring in the ampulla of the fallopian tube. The result of this union, leads to the production of a zygote cell, or fertilized egg, initiating prenatal development. Scientists discovered the dynamics of human fertilization in the nineteenth century.
Amastra pellucida was a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Amastridae. This species was endemic to Oʻahu, and was known from the Waiʻanae Valley.
Tetraphidaceae is a family of mosses. It includes only the two genera Tetraphis and Tetrodontium, each with two species. The defining feature of the family is the 4-toothed peristome.
Zona pellucida sperm-binding protein 4, ZP-4 or avilesine, named after its discoverer Manuel Avilés Sánchezis a protein that in humans is encoded by the ZP4 gene.
Thesprotia is a genus of mantises commonly known as grass mantis. They are native to the Americas and are represented by the following species:
Kateretidae is a family of short-winged flower beetles in the suborder Polyphaga. There are about 11 genera and at least 40 described species in Kateretidae. They are found worldwide except in New Zealand. Adults are anthophagous, feeding on flowers, while the larvae are spermatophagous inside the flower corolla.
Teuthowenia pellucida, the googly-eyed glass squid, is a rare deep-sea glass squid whose habitat ranges throughout the oceans of the southern hemisphere.
Tritia pellucida, common name : the cyclops nassa, is a species of sea snail, a marine gastropod mollusk in the family Nassariidae, the Nassa mud snails or dog whelks.
Folliculogenesis-specific basic helix-loop-helix, also known as factor in the germline alpha (FIGalpha) or transcription factor FIGa, is a protein that in humans is encoded by the FIGLA gene. The FIGLA gene is a germ cell-specific transcription factor preferentially expressed in oocytes that can be found on human chromosome 2p13.3.
Javesella pellucida is a species of insect in the family Delphacidae. It is found in most of Europe, China, Georgia, India, Japan, Kazakhstan, Kyrgyzstan, Mongolia, Turkey, Uzbekistan, Algeria, Libya, Morocco, most of North America, Central America, Cuba and Puerto Rico.
Teuthowenia maculata is a species of glass squid in the genus Teuthowenia. It is similar to the two other members of its genus - T. megalops and T. pellucida, but it is only found in the tropical waters off the coast of Africa in the eastern Atlantic Ocean. The largest recorded specimen is an immature male with a mantle length of 143 millimetres (5.6 in).
Carronella pellucida is a species of sea slug, an aeolid nudibranch, a marine heterobranch mollusc in the family Flabellinidae.
Parastagmatoptera pellucida is a species of praying mantis in the family Mantidae.
Conophorini is a tribe of bee flies in the family Bombyliidae. There are about 11 genera and 125 described species in Conophorini.
Geminaria canalis is a species of bee flies in the family Bombyliidae that occurs in southwestern North America.
Geminaria is a genus of bee flies. There are at least two described species in Geminaria.
Toxophora pellucida is a species of bee fly in the family Bombyliidae.
Fannia pellucida is a species of fly in the family Fanniidae.
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