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Parthenogenesis in squamates. 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 ...
This is the first recognized example of an animal species where both females and males can reproduce clonally resulting in a complete separation of male and female gene pools. [60] As a consequence, the males will only have fathers and the queens only mothers, while the sterile workers are the only ones with both parents of both sexes.
One 2022 study found more than 40 DDT-related compounds in the blood of wild California condors — chemicals that had made their way from contaminated marine life to the top of the food chain.
The Andean condor (Vultur gryphus) is a South American New World vulture and is the only member of the genus Vultur. It is found in the Andes mountains and adjacent Pacific coasts of western South America. With a maximum wingspan of 3.3 m (10 ft 10 in) and weight of 15 kg (33 lb), the Andean condor is one of the largest flying birds in the ...
Parthenogenesis in reptiles. 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 ...
The California condor (Gymnogyps californianus) is a New World vulture and the largest North American land bird. It became extinct in the wild in 1987 when all remaining wild individuals were captured, but has since been reintroduced to northern Arizona and southern Utah (including the Grand Canyon area and Zion National Park), the coastal mountains of California, and northern Baja California ...
The Andean condor has a wingspan of 2.7–3.1 metres (8 feet 10 + 1 ⁄ 2 inches – 10 feet 2 inches) [4] and even up to about 3.20 metres (10 ft 6 in) and a weight of 8–15 kg, [3] with males ranging from to 11 to 15 kg (24 to 33 lb) and females 7.5 to 11 kg (17 to 24 lb). [5]
The males, for their part, almost exclusively detect the isomer emitted by the females of their species, such that the hybridization although possible is scarce. The perception of the males is controlled by one gene , distinct from the one for the production of isomers, the heterozygous males show a moderate response to the odour of either type.