title: Pachytene mapping of the C9 and acrocentric bivalents in the human oocyte.
abstract: Provisional maps are presented for all acrocentric bivalents and bivalent 9, according to their chromomere patterns at pachytene in the human oocyte. Each G band is subdivided into several sub-bands whose numbers varies according to the degree of chromosomal compacting. Chromomere number and sequence are in basic agreement with those observed in late prophase mitotic chromosomes. Thus, metaphase G bands of mitotic chromosomes result from progressive compressing together of smaller chromomeres whose individuality disappears as chromosomal condensation increases with progression of prophase.
mesh_terms: D001399:Azure Stains; D002874:Chromosome Mapping; D002901:Chromosomes, Human, 13-15; D002904:Chromosomes, Human, 21-22 and Y; D002906:Chromosomes, Human, 6-12 and X; D005260:Female; D006570:Heterochromatin / Q000032:analysis; D006801:Humans; D008540:Meiosis; D008938:Mitosis; D009865:Oocytes
chemical_list: D001399:Azure Stains; D006570:Heterochromatin