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disassortative mating

[dis-uh-sawr-tuh-tiv]
noun Animal Behavior, Psychology.
  1. the reproductive pairing of individuals that have traits more dissimilar than would likely be the case if mating were random (contrasted with assortative mating).
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Compare panmixia.

Origin of disassortative mating

dis-1 + assort + -ative
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018