An attempt to estimate the effective size of the ancestral species common to two extant species from which homologous genes are sequenced.
D000818:Animals; D001483:Base Sequence; D005075:Biological Evolution; D002417:Cattle; D005796:Genes; D006801:Humans; D051379:Mice; D008957:Models, Genetic; D012689:Sequence Homology, Nucleic Acid; D013045:Species Specificity