title: High resolution replication patterns of the human Y chromosome. Intra- and interindividual variation.
abstract: Replication studies on prophasic human Y chromosomes reveal 4 early replicating segments in the euchromatic portion. The distal segment of Yp replicates first. After replication of the euchromatic part is almost finished 3 to 5 segments start replication in the heterochromatic portion of Yq. These segments exhibit considerable intraindividual variation with respect to the origin of onset of replication. While the location of these bands--once they are differentiated--is fixed within one individual, the number of these bands varies interindividually.
mesh_terms: D002478:Cells, Cultured; D004261:DNA Replication; D014644:Genetic Variation; D006570:Heterochromatin / Q000502:physiology; D006801:Humans; D007621:Karyotyping; D008214:Lymphocytes / Q000166:cytology; D008297:Male; D012730:Sex Chromosomes; D014998:Y Chromosome
chemical_list: D006570:Heterochromatin