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The African clawed frog (Xenopus laevis), also known as simply xenopus, African clawed toad, African claw-toed frog or the platanna) is a species of African aquatic frog of the family Pipidae. Its name is derived from the short black claws on its feet.
Xenopus egg extract is a lysate that is prepared by crushing the eggs of the African clawed frog Xenopus laevis.It offers a powerful cell-free (or in vitro) system for studying various cell biological processes, including cell cycle progression, nuclear transport, DNA replication and chromosome segregation.
Xenopus (/ ˈ z ɛ n ə p ə s / [1] [2]) (Gk., ξενος, xenos = strange, πους, pous = foot, commonly known as the clawed frog) is a genus of highly aquatic frogs native to sub-Saharan Africa. Twenty species are currently described within it.
African dwarf frog [1] is the common name for members of Hymenochirus, a genus of aquatic frog native to parts of Equatorial Africa. [1] [2] They are common in the pet trade and are often mistaken for the African clawed frog, a similar-looking frog in the same family.
Oscar Hertwig first achieved artificial parthenogenesis in frogs in 1911, using eggs fertilized by irradiated sperm. [1] The radiation destroyed the DNA within the sperm, but nearly normal embryos were still produced. Gunther Hertwig repeated this experiment in 1924, using crosses between different frogs. [1]
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The embryonic development of tailless amphibians is presented below using the African clawed frog (Xenopus laevis) and the northern leopard frog (Lithobates pipiens) as examples. The oocyte in these frog species is a polarized cell — it has specified axes and poles.
The announcement of the frog's return comes two years after a conservation effort began to bring them back to the archaeological site that was home to the Mississippian culture of Native Americans ...