Genetic bottlenecks.
D002612:Acinonyx / Q000235:genetics*; D000818:Animals; D002335:Carnivora / Q000235:genetics*; D014644:Genetic Variation; D005828:Genetics, Population; D006793:Houseflies / Q000235:genetics*; D008297:Male; D051379:Mice / Q000235:genetics; D012098:Reproduction