Aneuploidy in metaphases II of spermatocytes of wild house mice from a hybrid zone between a Robertsonian population (CD: 2n = 22) and a population with the standard karyotype (2n = 40).
Meiotic metaphases II from archival slides were studied of male house mice caught in a hybrid zone between a population monomorphic for nine centric fusions (2n = 22) and a population with the standard karyotype (2n = 40), near Rome. The frequency of aneuploidy increases, up to 50%, with increasing number of heterozygous centric fusions (1-4).
Rizzoni
M
M
Department of Biology, University of Rome Torvergata, Italy.
Spirito
F
F
D000782:Aneuploidy; D000818:Animals; D000835:Animals, Wild / Q000235:genetics*; D003433:Crosses, Genetic; D005828:Genetics, Population; D007621:Karyotyping; D008297:Male; D008677:Metaphase; D051379:Mice / Q000235:genetics*; D013090:Spermatocytes / Q000648:ultrastructure*; D013091:Spermatogenesis; D014178:Translocation, Genetic