Random mating

In genetics, random mating (or panmixus) involves the mating of individuals regardless of any physical, genetic, or social preference. In other words, the mating between two organisms is not influenced by any environmental, hereditary, or social interaction. Hence, potential mates have an equal chance of being selected. Random mating is a factor assumed in the Hardy-Weinberg principle. Random mating is a separate assumption than natural selection. It is possible to have random mating at the same time the population is undergoing viability selection, for example.

Non random mating in humans
Pangamie