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Note the eyes and lips remain the normal colour. Studies have shown that the reduced pigment comes from a mutation in the gene for tyrosinase, the same as causes Type I oculocutaneous albinism in humans. [1] This white horse owes its coloring to a dominant allele (dominant white). A leucistic rock dove. Both the eyes and legs are still of the ...
A peacock spreading his tail, displaying his plumagePeahen. Peafowlis a common name for two bird species of the genus Pavoand one species of the closely related genus Afropavowithin the tribe Pavoniniof the family Phasianidae(the pheasants and their allies). Male peafowl are referred to as peacocks, and female peafowl are referred to as peahens.
Maratus jactatus. Maratus jactatus (colloquially named sparklemuffin) [2] is a species of the genus Maratus (peacock spiders), an Australian member of the jumping spider family. Maratus jactatus are from the jumping spider group Salticidae. [3] The name jactatus is Latin for rocking - derived from their signature mating rituals.
The Indian peafowl ( Pavo cristatus ), also known as the common peafowl or blue peafowl, is a peafowl species native to the Indian subcontinent. It has been introduced to many other countries. Male peafowl are referred to as peacocks, and female peafowl are referred to as peahens, although both sexes are often referred to colloquially as a ...
Fisherian runaway or runaway selection is a sexual selection mechanism proposed by the mathematical biologist Ronald Fisher in the early 20th century, to account for the evolution of ostentatious male ornamentation by persistent, directional female choice. [ 1][ 2][ 3] An example is the colourful and elaborate peacock plumage compared to the ...
Koinophilia is an evolutionary hypothesis proposing that during sexual selection, animals preferentially seek mates with a minimum of unusual or mutant features, including functionality, appearance and behavior.
Home (. The X-Files. ) The Peacock family burying their child alive. Due to its graphic nature, as illustrated by this scene, "Home" became the first episode of The X-Files to receive a viewer discretion warning. " Home " is the second episode of the fourth season of the American science fiction television series The X-Files, which originally ...
In biology, adaptation has three related meanings. Firstly, it is the dynamic evolutionary process of natural selection that fits organisms to their environment, enhancing their evolutionary fitness. Secondly, it is a state reached by the population during that process. Thirdly, it is a phenotypic trait or adaptive trait, with a functional role ...