non-random mating

A common cause of non-random mating is inbreeding, which causes an increase in homozygosity for all genes.

These influences include non-random mating, mutation, selection, genetic drift, gene flow and meiotic drive.

Generally, sympatric speciation in animals requires the evolution of both genetic differences and non-random mating, to allow reproductive isolation to evolve.

Any such trait that encourages non-random mating that reinforces speciation is known as a "magic trait".

The level of linkage disequilibrium is influenced by a number of factors, including genetic linkage, selection, the rate of recombination, the rate of mutation, genetic drift, non-random mating, and population structure.

With 'D. persimilis' he found that the caged population followed the values expected on the Hardy-Weinberg equilibrium when conditions were optimal (which disproved any idea of non-random mating), but with a restricted food supply heterozygotes had a distinct advantage.

There are a number of types of non-random mating, such as mate choice (selection by females from a small group of males), mating type (in microorganisms like Paramecium), selfing in some flowering plants, and in general, inbreeding.