title: Mechanisms and evolutionary origins of variable X-chromosome activity in mammals.
mesh_terms: D000483:Alleles; D000818:Animals; D005075:Biological Evolution; D002415:Cats; D002417:Cattle; D002455:Cell Division; D006224:Cricetinae; D004285:Dogs; D005260:Female; D005854:Germ Cells; D000882:Haplorhini; D006801:Humans; D008297:Male; D008322:Mammals; D051379:Mice; D011817:Rabbits; D051381:Rats; D012730:Sex Chromosomes; D012732:Sex Determination Analysis