Ad
related to: female lizard reproductive system anatomy diagram printable worksheets
Search results
Results From The WOW.Com Content Network
Females also gain nutrients from sperm storage so the more a female mates with different males the more nutritional access she will obtain. [40] After copulation, some female lizard species chose the sex of their offspring based on the male's sperm. Females produce sons with sperm from larger sires, and daughters from sperm with smaller sires. [41]
As such, there are over 80 species of unisex reptiles (mostly lizards but including a single snake species), amphibians and fishes in nature for which males are no longer a part of the reproductive process. [43] A female produces an ovum with a full set (two sets of genes) provided solely by the mother.
Pulmonate land gastropods are simultaneous hermaphrodites and their reproductive system is complex. It is all completely internal, except for genital protrusion (eversion) during mating. The outer opening of the reproductive system is called the "genital pore"; it is positioned on the right-hand side, very close to the head of the animal.
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]
Apophallation may be made necessary in order for separation to occur by the partner tightly gripping the penis via a special muscle of the female reproductive tract. [25] Apophallation may benefit the amputator because it prevents the amputee from mating again in the near future, which would result in sperm competition.
The desert grassland whiptail lizard (Aspidoscelis uniparens) is an all-female species of reptiles in North America. It was formerly placed in the genus Cnemidophorus. A common predator of the whiptail lizard is the leopard lizard that preys on A. uniparens by using ambush and stalk hunting tactics. [2] [3] [4] These reptiles reproduce by ...
Madagascar day geckos engage in a mating ritual in which sexually mature males produce a waxy substance from pores on the back of their legs. Males approach females with a head swaying motion along with rapid tongue flicking in the female. [59] Obligate parthenogenesis as a reproductive system has evolved multiple times in the family Gekkonidae ...
The mammalian female reproductive system contains three main divisions: the vagina and uterus, which act as the receptacle for the sperm, the ovaries, which produce the female's ova, and the vulva, which consists of the labia and clitoris. The vagina, uterus and ovaries are always internal while the vulva is external.