Search results
Results from the WOW.Com Content Network
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 ...
In California Condors facultative parthenogenesis can occur even when a male is present and available for a female to breed with. [20] In times of stress, offspring produced by sexual reproduction may be fitter as they have new, possibly beneficial gene combinations.
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 ...
A new method of rearing California condors at the Los Angeles Zoo has resulted in a record-breaking 17 chicks hatched this year. ... When a female produces a fertilized egg, the egg is moved to an ...
The female condor is smaller than the male, an exception to the rule among birds of prey (the related Andean condor is another exception). Overall length ranges from 109 to 140 cm (43 to 55 in) and wingspan from 2.49 to 3 m (8 ft 2 in to 9 ft 10 in).
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 ...
Sexual selection in scaled reptiles studies how sexual selection manifests in snakes and lizards, which constitute the order Squamata of reptiles. Each of the over three thousand snakes use different tactics in acquiring mates. [1] Ritual combat between males for the females they want to mate with includes topping, a behavior exhibited by most ...
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]