SINGLE-ACTIVE-X HYPOTHESIS: CYTOLOGICAL EVIDENCE FOR RANDOM   INACTIVATION OF X-CHROMOSOMES IN A FEMALE MULE COMPLEMENT.
D000818:Animals; D001345:Autoradiography; D002455:Cell Division; D002875:Chromosomes; D018397:Equidae; D005260:Female; D005823:Genetics; D006824:Hybridization, Genetic; D007962:Leukocytes; D010527:Perissodactyla; D012106:Research; D013936:Thymidine; D014316:Tritium; D014960:X Chromosome
D014316:Tritium; D013936:Thymidine
CELL DIVISION; CHROMOSOMES; EXPERIMENTAL LAB STUDY; GENETICS; HYBRIDIZATION; LEUKOCYTES; PERISSODACTYLA; RADIOAUTOGRAPHY; THYMIDINE; TRITIUM