The word "assortative" refers to the tendency or process of selecting or grouping things that are similar or alike. It means that things with similar characteristics or qualities are being paired or grouped together.
As the variance of admixture has been used to infer the timing of hybridization and sex - biased admixture, we consider the implications of assortative mating for inferring population history and speciation. (genestogenomes.org)
This article examines alternative explanations for such observed concordance and discusses the effects of assortative mating on population genetics and the social environment. (jamanetwork.com)
The researchers also tested for assortative mating in other traits, such as years of education, in 7780 couples in a U.K. database. (sciencemag.org)