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Fisherian runaway: Difference between revisions
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→Sexy son hypothesis
m (→Sexy son hypothesis: Added more detail to section. The implication that desire for 'sexy sons' (indirect genetic benefit), can outweigh direct benefits (male provision and protection). Also clarified 'sexy daughters' section further.) |
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The sexy son hypothesis in evolutionary biology and sexual selection—proposed by Ronald Fisher in 1930—states that a female's ideal mate choice among potential mates is one whose genes will produce male offspring with the best chance of [[reproductive success]]. | The sexy son hypothesis in evolutionary biology and sexual selection—proposed by Ronald Fisher in 1930—states that a female's ideal mate choice among potential mates is one whose genes will produce male offspring with the best chance of [[reproductive success]]. | ||
This implies that the male's ability to provide is less important, especially in polygynous species (like humans are, moderately) where the lesser paternal investment must be | This implies that the male's ability to provide is less important, especially in polygynous species (like humans are, moderately) where the lesser paternal investment must be outweighed by the benefit in reproductive success the female achieves through mating with an attractive male. She forgoes direct benefits (resources and protection) in exchange for indirect genetic benefits (greater reproductive success). Though these are not necessarily mutually exclusive, of course.<ref>https://academic.oup.com/beheco/article/19/2/456/214088</ref> | ||
{{#ev:youtube|https://www.youtube.com/watch?v=idc_XZpB0h0|frame|}} | {{#ev:youtube|https://www.youtube.com/watch?v=idc_XZpB0h0|frame|}} | ||
Since having sexy sons stems from women choosing the mate they are most physically attracted too, the male equivalent is doing the same thing (resulting in sexy daughters). However, men are typically [[bateman's principle|less choosy]] in regards to their standard in female looks (at least for relationships that require less investment). Males choosing women whom they were most physically attracted too, and could attain, having been the norm throughout human history, has resulted in the development of female ornamental traits designed to attract men. | Since having sexy sons stems from women choosing the mate they are most physically attracted too, the male equivalent is doing the same thing (resulting in sexy daughters). However, men are typically [[bateman's principle|less choosy]] in regards to their standard in female looks (at least for relationships that require less investment). Males choosing women whom they were most physically attracted too, and could attain, having been the norm throughout human history, has resulted in the development of female ornamental traits designed to attract men. | ||