title: Undertransmission of a supernumerary chromosome segment through heterozygous females possessing B chromosomes in the grasshopper Eyprepocnemis plorans.
abstract: The transmission ratio (ks) for a supernumerary chromosome segment was studied in a total of 54 heterozygous females collected from two Spanish natural populations of the grasshopper Eyprepocnemis plorans. Our analysis clearly demonstrated that ks is negatively dependent on the number of B chromosomes in the female. The possible mechanisms by which B chromosomes may cause undertransmission of the supernumerary segment, and the implications of this phenomenon for the maintenance of this extra chromosome segment, are discussed.
authors.forename: M D
authors.initials: MD
authors.lastname: López-León
authors.forename: M C
authors.initials: MC
authors.lastname: Pardo
authors.forename: J
authors.initials: J
authors.lastname: Cabrero
authors.forename: J P
authors.initials: JP
authors.lastname: Camacho