The incidence of freemartinism in sheep.
D000818:Animals; D002417:Cattle; D005260:Female; D005611:Freemartinism / Q000453:epidemiology*; D007621:Karyotyping; D008297:Male; D012730:Sex Chromosomes; D012732:Sex Determination Analysis; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology*