Sexually Antagonistic Selection in Human Male Homosexuality
http://www.plosone.org/article/fetchArticle.action?articleURI=info:doi/10.1371/journal.pone.0002282
This idea seems sound to me, if they are right in the observation that lineages with male homosexuals have women who are more fertile (something that is hardly relevant in the west given few people even want more than a couple of kids) - what do you all think?
http://www.plosone.org/article/fetchArticle.action?articleURI=info:doi/10.1371/journal.pone.0002282
An unexpected implication of the new models concerns the impact that the sexually antagonistic genetic factors for male homosexuality have on the overall fecundity of a population. The findings suggest that the proportion of male homosexuals may signal a corresponding proportion of females with higher fecundity. Consequently, these factors always contribute, all else being equal, a positive net increase of the fecundity of the whole population, when compared to populations in which such factors are lower or absent. This increase grows as the population baseline fecundity decreases; this means that
the genes influencing male homosexuality end up playing the role of a buffer effect on any external factors lowering the overall fecundity of the whole population.
This idea seems sound to me, if they are right in the observation that lineages with male homosexuals have women who are more fertile (something that is hardly relevant in the west given few people even want more than a couple of kids) - what do you all think?