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The panmixia (Engl. Random mating ) is a term used in population genetics . If every individual in a population mates with everyone of the opposite sex with the same probability, then this ideal case is called panmixia. The resulting random distribution of alleles within a population is an important prerequisite for the Hardy-Weinberg equilibrium .

In naturally occurring populations, however, this ideal case does not usually exist, since reproduction is significantly influenced by various selection and isolation mechanisms (such as geographic isolation ). Other well-known examples of restricted panmixia when choosing a partner are body size and intelligence.

A counterpart to panmixia in species with sexual reproduction would be assortative mating . Individuals tend to

  • which are particularly similar to them in certain respects (positive assortative pairing)
  • or dissimilar (negative assortative pairing or disassortative pairing)

to choose partner appearing.

Individual evidence

  1. Werner Buselmaier, Gholamali Tariverdian: Human Genetics , Springer-Verlag GmbH; 3rd, update and edit again 2004 edition (November 2003), ISBN 354000873X , p. 369