title: Preferential late replication of one of the two morphologically distinguishable X-chromosomes in a female muntjac.
abstract: In a female barking deer, Muntiacus muntjak, whose 2 X-chromosomes are mutually distinguishable from each other, one X has been found to be late replicating in 57.8% cells compared to the other which is late replicating in 42.2% cells. These data are suggestive of preferential inactivation of one X-chromosome. These findings have been discussed in the light of Lyon's hypothesis of random X-inactivation in eutherian mammals.
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D004261:DNA Replication; D003670:Deer / Q000378:metabolism*; D005260:Female; D008214:Lymphocytes / Q000378:metabolism / Q000648:ultrastructure; D012730:Sex Chromosomes / Q000378:metabolism*; D013997:Time Factors