B-chromosome systems in the greater glider (Petauroides volans volans) (Marsupialia:Petauridae). I. B-chromosome distribution.
Variations in diploid chromosome number, due to the presence of B chromosomes, are found within the distribution of P. v. volans. B chromosomes vary in number between one and eight per animal, are mitotically stable in various body tissues and, unlike the Y chromosome in male P. v. volans, are not eliminated from bone marrow cells. Animals possessing B chromosomes have a distinct distribution, and it appears that a stable equilibrium between the forces of B chromosome accumulation or elimination is operating in those populations possessing these chromosomes.
D000705:Anaphase; D000818:Animals; D001315:Australia; D001854:Bone Marrow Cells; D002478:Cells, Cultured; D002875:Chromosomes / Q000648:ultrastructure*; D003710:Demography; D005260:Female; D014644:Genetic Variation; D007621:Karyotyping; D008297:Male; D008394:Marsupialia / Q000235:genetics*; D008938:Mitosis; D013093:Spermatogonia / Q000166:cytology; D014960:X Chromosome; D014998:Y Chromosome