For 10 points, name this principle which states that allele and genotype frequencies remain constant in the absence of disturbing influences.
This principle was independently developed by William Castle. One phenomenon which would cause this principle not to apply is avoided by self-incompatibility in plants; that phenomenon, which favors homozygosity, is assortative mating. Deviation from it can be caused by meiotic drive, non-random (*) mating, genetic drift, or mutations. For 10 points, name this principle which states that allele and genotype frequencies remain constant in the absence of disturbing influences.
This principle was independently developed by William Castle.
{Hardy}-{Weinberg} equilibrium