Polymgamy and genetic equilibrium.
D000349:Africa; D005787:Gene Frequency; D005828:Genetics, Population; D006455:Hemoglobins, Abnormal; D006579:Heterozygote; D006720:Homozygote; D006801:Humans; D008393:Marriage; D008954:Models, Biological
D006455:Hemoglobins, Abnormal