First description of B chromosomes in the Hyphessobrycon (Characiformes, Characidae) genus: a hypothesis for the extra element of Hyphessobrycon eques Steindachner, 1882


	Scheme showing a possible origin of the B chromosome in H. eques. A Pair 19 not fissioned B The short arm of one homologous underwent fission and inversion C One homologous of pair 19 without the secondary constriction and a B chromosome formed.

Part of: Piscor D, Parise-Maltempi PP (2015) First description of B chromosomes in the Hyphessobrycon (Characiformes, Characidae) genus: a hypothesis for the extra element of Hyphessobrycon eques Steindachner, 1882. Comparative Cytogenetics 9(3): 325-333. https://doi.org/10.3897/CompCytogen.v9i3.5224