[B-chromosomes in the spermatogenesis of blood-sucking black flies].
The karyofund of Odagmia ornata taken from natural population was investigated with the light microscope, the existence of a definite number of specimens with B-chromosomes being discovered. The behaviour of B-chromosomes in the spermatogenesis was analyzed. The dynamics of the number of specimens with B-chromosomes is presumably associated with the peculiarities of their behaviour in meiosis, i.e. with the unequal distribution of these chromosomes in the number of sex cells.
D000818:Animals; D002875:Chromosomes / Q000648:ultrastructure*; D007621:Karyotyping; D007814:Larva / Q000648:ultrastructure; D008297:Male; D008540:Meiosis; D012843:Simuliidae / Q000648:ultrastructure*; D013091:Spermatogenesis
B-khromosomy v spermatogeneze krovososushchikh moshek.