How is allele frequency altered if mating is assortative?Watch
Can anyone give an example? Like is it about how attraction? Example female birds getting attracted to males that dancers better?
You can also have negative assortative mating, where individuals prefer to mate with those with phenotypes unlike their own. That might have the effect of equalising allele frequencies.
It's worth pointing out that allele frequencies will change only if there is a correlation between that particular phenotype and genotype. Some phenotypes might not be genetically determined.