Karyotypes of females of C. gomesi. In (a) population from the Minhoca stream, São Francisco River basin (MG). The W chromosome is entirely heterochromatic and easily identifiable by C-banding, used in the chromosomal microdissection and obtaining of W-specific probe. In (b) population from the Verde River, Tibagi River basin (PR). Bar = 10 μm.
Machado et al. BMC Genetics 2011 12:65 doi:10.1186/1471-2156-12-65