Re: Homosexuality and natural selection
From Wiki:
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Some scholars have suggested that homosexuality is adaptive in a non-obvious way. By way of analogy, the allele (a particular version of a gene) which causes sickle-cell anemia when two copies are present may also confer resistance to malaria with no anemia when one copy is present.[citation needed]
The so-called "gay uncle" theory posits that people who themselves do not have children may nonetheless increase the prevalence of their family genes in future generations by providing resources (food, supervision, defense, shelter, etc.) to the offspring of close relatives. This "gay relative" hypothesis is an extension of the theory of kin selection. Kin selection was originally developed to explain apparent altruistic acts which seemed to be maladaptive. The initial concept was suggested by J.B.S. Haldane in 1932 and later elaborated by many others including John Maynard Smith and West Eberhard.[3] This concept also was used to explain certain social insects where most of the members are non-reproductive.
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