Inverted and satellited Y chromosome in the orangutan (Pongo pygmaeus).
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.
Schempp
W
W
Institut für Humangenetik und Anthropologie, Universität Freiburg, Germany.
Toder
R
R
Rietschel
W
W
Grützner
F
F
Mayerová
A
A
Gauckler
A
A
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
D004247:DNA