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The boa had not had contact with another snake for nearly a decade, so she appears to have undergone a natural process of asexual reproduction called parthenogenesis. The term is derived from the ...
A form of asexual reproduction related to parthenogenesis is gynogenesis. Here, offspring are produced by the same mechanism as in parthenogenesis, but with the requirement that the egg merely be stimulated by the presence of sperm in order to develop. However, the sperm cell does not contribute any genetic material to the offspring.
Parthenogenesis is a mode of asexual reproduction in which offspring are produced by females without the genetic contribution of a male. Among all the sexual vertebrates, the only examples of true parthenogenesis, in which all-female populations reproduce without the involvement of males, are found in squamate reptiles (snakes and lizards). [1]
The rainbow boa is typically orange, brown, or reddish brown, with a paler belly and black markings: three parallel stripes on the head, rings down the back, and lateral blotches with a crescent over them, although there is a great deal of natural variation that may be heightened by artificial breeding.
The genetic diversity generated by sexual reproduction in these organisms is thought to play an important role in their ability to adapt to changing environmental conditions. [9] Obligate thelytoky refers to a form of asexual reproduction in which an individual is unable to reproduce sexually and must rely on asexual reproduction for ...
Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes. The offspring that arise by asexual reproduction from either unicellular or multicellular organisms inherit the full set of genes of their single parent and thus the newly created individual is genetically and ...
Reproduction in squamate reptiles is ordinarily sexual, with males having a ZZ pair of sex-determining chromosomes, and females a ZW pair. However, the Colombian rainbow boa, Epicrates maurus, can also reproduce by facultative parthenogenesis, resulting in production of WW female progeny. [23] The WW females are likely produced by terminal ...
“The asexual, graysexual, demisexual [identities] is a great example of different degrees of the same concept,” Lewis explains. So these identities, plus allosexual, represent the level of ...