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Homosexuality in men may be an evolutionary advantage if it is caused by a set of “feminizing” genes and if men who carry sub-critical numbers of these genes are rendered more sensitive and therefore less likely to kill their own offspring.

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Homosexuality in men may be an evolutionary advantage if it is caused by a set of “feminizing” genes and if men who carry sub-critical numbers of these genes are rendered more sensitive and therefore less likely to kill their own offspring.

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