Late DNA replication in male mouse meiotic chromosomes.
Parts of the male mouse meiotic complement comprising the Y chromosome, the whole X chromosome, and near-centromeric parts of autosomal bivalents are synthesized late, as judged by tritiated thymidine autoradiography. This confirms the occurrence of end-to-end association between X and Y chromosomes and suggests that paired heterochromatic segments in autosomes must synthesize DNA at the same time.
D000818:Animals; D001345:Autoradiography; D004261:DNA Replication; D008297:Male; D008540:Meiosis; D051379:Mice; D012730:Sex Chromosomes / Q000378:metabolism*; D013936:Thymidine / Q000378:metabolism; D013997:Time Factors; D014316:Tritium
D014316:Tritium; D013936:Thymidine