Synaptonemal complexes of univalent B chromosomes in the grasshoppers euthystira brachyptera and myrmeleotettix maculatus

Abstract

B chromosomes of two species of grasshoppers, Myrmeleotettix maculatus and Euthystira brachyptera, have been studied. The synaptonemal complexes of univalent B chromosomes in male meiosis are described. The results support the view that they are isochromosomes, and there is no evidence of differences in behaviour of the B between the two species. © 1988, The Genetical Society of Great Britain.