title: Regional assignment of a 2.1-kb repetitive sequence to the distal part of the human Y heterochromatin.
abstract: Variants in structure and content of the human Y chromosome were investigated by cytogenetic methods and by restriction endonuclease analysis. It is shown that most or all of the 2.1-kb male-specific reiterated sequence is located in the distal part of the brightly fluorescing heterochromatin.
mesh_terms: D002877:Chromosomes, Human / Q000648:ultrastructure*; D014644:Genetic Variation; D006570:Heterochromatin / Q000235:genetics; D006801:Humans; D008297:Male; D012091:Repetitive Sequences, Nucleic Acid; D012730:Sex Chromosomes / Q000648:ultrastructure*; D014178:Translocation, Genetic; D014997:XYY Karyotype / Q000235:genetics; D014998:Y Chromosome / Q000648:ultrastructure*
chemical_list: D006570:Heterochromatin