Re: Your lack of genetics knowledge

Posted by MR naf on October 22, 2001 at 02:44:15:

In Reply to: Your lack of genetics knowledge posted by Ghi Reptiles on October 21, 2001 at 21:07:22:

Forms of albinism occur in cold-blooded animals, but their causes are different. Albinism in frogs
and certain salamanders, for example, is apparently caused by hormonal deficiency, because it can
be cured by an injection of pituitary hormone. In fish, complete or spotty melanism (atypical black
color) or albinism can be induced by merely severing certain nerves. Most cases of so-called
albinism in insects are probably color variations rather than the complete absence of pigmentation
characteristic of albino mammals. Albinism in plants is always quickly fatal, because the plant
cannot manufacture its food without the pigment chlorophyll.

Newton E. Morton, M.S., Ph.D.
Chair, Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center.

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: Forms of albinism occur in cold-blooded animals, but their causes are different. Albinism in frogs : and certain salamanders, for example, is apparently caused by hormonal deficiency, because it can : be cured by an injection of pituitary hormone. In fish, complete or spotty melanism (atypical black : color) or albinism can be induced by merely severing certain nerves. Most cases of so-called : albinism in insects are probably color variations rather than the complete absence of pigmentation : characteristic of albino mammals. Albinism in plants is always quickly fatal, because the plant : cannot manufacture its food without the pigment chlorophyll. : : Newton E. Morton, M.S., Ph.D. : Chair, Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center.

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