Both X chromosomes function before visible X-chromosome inactivation in female mouse embryos.
D000228:Adenine Phosphoribosyltransferase / Q000378:metabolism; D000483:Alleles; D000818:Animals; D001755:Blastocyst / Q000166:cytology / Q000201:enzymology*; D005260:Female; D005865:Gestational Age; D007041:Hypoxanthine Phosphoribosyltransferase / Q000378:metabolism; D008297:Male; D012730:Sex Chromosomes / Q000502:physiology*; D014960:X Chromosome / Q000502:physiology*
D000228:Adenine Phosphoribosyltransferase; D007041:Hypoxanthine Phosphoribosyltransferase