title: Inverted and satellited Y chromosome in the orangutan (Pongo pygmaeus).
abstract: An inverted and satellited Y chromosome of almost acrocentric appearance was detected in seven of 14 male orangutans. In the remaining seven animals a submetacentric Y chromosome without NORs occurred. The high frequency with which the satellited Y chromosomes were associated with acrocentric autosomes and the positive AgNO3-staining of their satellite stalks clearly indicate the active state of the NOR on the Y chromosomes. DNA fingerprinting in two orangutan families showed that the inverted and satellited Y chromosomes in carrier orangutan males do not interfere with normal fertility. Within our sample of male orangutans studied, the inverted and satellited Y chromosome is restricted to Sumatran animals; all Bornean specimens possessed the submetacentric Y chromosome. The question arises whether these two kinds of Y chromosome differ constitutively between the Pongo pygmaeus subpopulations.
authors.affiliation: Institut für Humangenetik und Anthropologie, Universität Freiburg, Germany.
authors.forename: W
authors.initials: W
authors.lastname: Schempp
authors.forename: R
authors.initials: R
authors.lastname: Toder
authors.forename: W
authors.initials: W
authors.lastname: Rietschel
authors.forename: F
authors.initials: F
authors.lastname: Grützner
authors.forename: A
authors.initials: A
authors.lastname: Mayerová
authors.forename: A
authors.initials: A
authors.lastname: Gauckler
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D002874:Chromosome Mapping; D004247:DNA / Q000032:analysis* / Q000235:genetics; D016172:DNA Fingerprinting; D005260:Female; D014644:Genetic Variation; D006801:Humans; D008297:Male; D010375:Pedigree; D011148:Pongo pygmaeus / Q000235:genetics*; D015183:Restriction Mapping; D012867:Skin / Q000166:cytology; D014998:Y Chromosome / Q000648:ultrastructure
chemical_list: D004247:DNA