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Homosexuality: Difference between revisions
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→Evolution of male androphilia
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Since homosexual acts cannot produce offspring, one would expect attraction to other men (androphilia) to be non-adaptive or even [[maladaptiveness|maladaptive]], because, from the point of view of the genes, homosexual men waste time and resources on activities that do not raise directly their [[reproductive success]]. | Since homosexual acts cannot produce offspring, one would expect attraction to other men (androphilia) to be non-adaptive or even [[maladaptiveness|maladaptive]], because, from the point of view of the genes, homosexual men waste time and resources on activities that do not raise directly their [[reproductive success]]. | ||
However, male androphilia is more prevalent than what [[wikipedia:Mutation–selection balance|mutation–selection balance]] between androphilia and gynophilia (attraction women) would predict.<ref name="ref42">http://www.bbc.com/news/magazine-26089486</ref> | This holds primarily true for ''exclusive'' homosexuality (and less for bi-sexuality). | ||
Additionally, homosexuality and androphilia are somewhat heritable (around 40%),<ref>https://www.ncbi.nlm.nih.gov/pubmed/9251839</ref><ref>http://abcnews.go.com/2020/story?id=2449185</ref> all of which | However, male androphilia is likely more prevalent than what [[wikipedia:Mutation–selection balance|mutation–selection balance]] between androphilia and gynophilia (attraction women) would predict.<ref name="ref42">http://www.bbc.com/news/magazine-26089486</ref> | ||
Additionally, homosexuality and androphilia are somewhat heritable (around 40%),<ref>https://www.ncbi.nlm.nih.gov/pubmed/9251839</ref><ref>http://abcnews.go.com/2020/story?id=2449185</ref> all of which may suggest that homosexuality is an adaptation, i.e. that it increased men's [[reproductive success]] (RS) in the past. | |||
One can broadly distinguish ''slow'' and ''fast'' [[life history]] (LH) adaptations involving male androphilia, where fast LH means low investment in the offspring (a result of r-selection) and slow LH means high investment (a result of K-selection). Fast LH adaptations tend to be more violent, primitive, feral, accompanied by earlier maturation, lower cultural and social sophistication, higher [[sex drive]] and more [[promiscuity]]. | One can broadly distinguish ''slow'' and ''fast'' [[life history]] (LH) adaptations involving male androphilia, where fast LH means low investment in the offspring (a result of r-selection) and slow LH means high investment (a result of K-selection). Fast LH adaptations tend to be more violent, primitive, feral, accompanied by earlier maturation, lower cultural and social sophistication, higher [[sex drive]] and more [[promiscuity]]. | ||