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assort
(redirected from assortative)

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We found that assortative mating, that is partner choice based on a shared ancestry, is very common in these populations," said Risch.
The attitude of unreserved choosiness that governs the norms of assortative mating is very different, however, from the unconditional attachment that governs the norms of parental love.
The specific consequences of assortative mating are complex, but it can be generalized that if individuals preferentially mate according to phenotypic similarity (positive assortative mating), it will normally increase quantitative genetic variance and that negative assortative mating generally has the opposite effect (Conner & Hartl 2004).
 
 
 
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