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Message: <blockquote data-quote="hermmays" data-source="post: 1950553" data-attributes="member: 90503">I think all he means is that variation in how much one loves their kids would occur at random with respect to the survival of a particular allele subject to genetic drift. Individuals have all sorts of things that influence their survival but as long as all those those things occur at random with respect to a particular allele that allele will be subject to drift. Of course it isn't either/or and alleles can be subject to both drift and selection.Herm</blockquote>