Subnormal visual acuity (SVAS) and albinism in Mexican 12-13
The results indicate that albinism is common in Mexico, although not as common as in a similar Swedish population. A prevalence of albinism of approximately 0.3% was found in the Mexican population, compared to approximately 1% in the Swedish study group. The number of albinos was much higher in bot …
Subnormal Visual Acuity (SVAS) and albinism in Mexican 12
A prevalence of albinism of approximately 0.3% was found in the Mexican population, compared to approximately 1% in the Swedish study group. The number of albinos was much higher in both study groups than to be expected from previous estimates.
Albinism - Wikipedia
Familiar albino animals include in-bred strains of laboratory animals (rats, mice and rabbits), but populations of naturally occurring albino animals exist in the wild, e.g., Mexican cave tetra. Albinism is a well-recognized phenomenon in molluscs, both in the shell and in the soft parts.
Determining a Worldwide Prevalence of Oculocutaneous Albinism…
Oculocutaneous albinism (OCA) is a group of inherited pigment disorders in which melanin biosynthesis is decreased or absent. 1 OCA occurs in populations all over the world at varying frequencies, 2, 3 but there are few good prevalence studies. 4 Several types are described (OCA1–7), each being caused by mutations in a different gene. 5 ...
Mutations in the albinism gene oca2 alter vision-dependent prey …
2024年6月17日 · A striking example of a pleiotropic gene contributing to trait evolution is the oca2 gene, coding mutations in which underlie albinism and reductions of sleep in the blind Mexican cavefish, Astyanax mexicanus. Here, we characterize the effects of mutations in the oca2 gene on larval prey capture.
Clusters of oculocutaneous albinism in isolated populations in …
2023年12月18日 · Woolf (2005) reviewed the high prevalence of OCA2 in Native American communities (1:28 to 1:6,500) in southern Mexico, southwestern USA, eastern Panama and south Brazil. Although albinism implies the reduction of reproduction (Darwinian fitness), demographic characteristics allowed the increase in the frequency of occurrences of OCA in certain ...
Albinism in Didelphis virginiana (Kerr, 1792): the first reported …
It causes individuals to present with a white coloration of the skin and hair, as well as red eyes, known as albino. This manuscript documents the first record in Mexico of complete albinism in a marsupial, Didelphis virginiana, captured in the Yucatan peninsula.
First report of partial albinism in the blue lobster
2018年9月12日 · The first case of partial albinism registered in the Mexican Pacific by the blue lobster Panulirusinflatus is presented. The specimen was collected on the southern coast of Jalisco know as Punta “El Estrecho”. It constitutes one of the few registered cases of albinism in invertebrates from the Eastern Tropical Pacific.
Mexicolore
2024年11月28日 · He translates as ‘albino’ the Nahuatl term tlacaztalmicoa which Dibble and Anderson translate as ‘people of light complexion’. They’re quoting the Florentine Codex Book 7, Chapter 1, which describes the panic surrounding a solar eclipse in ancient Mexico. When this occurs [the sun] turns red. It is no longer quiet, no longer tranquil.
Albinism in humans - Wikipedia
Albinism is a congenital condition characterized in humans by the partial or complete absence of pigment in the skin, hair and eyes. Albinism is associated with a number of vision defects, such as photophobia, nystagmus, and amblyopia. Lack of skin pigmentation makes for more susceptibility to sunburn and skin cancers.