[GC-rich chromomycin-positive (CMA/DA)-blocks in chicken (Gallus gallus domesticus) karyotypes: ideogram and intraspecies variability of the pattern].

Fluorescence pattern on chromosomes stained with chromomycin A3 (CMA) and contrasted with distamycin A (DA) was studied in representatives of seven markedly divergent chicken (Gallus gallus domesticus) breeds. The maps of CMA-positive bands on chicken macrochromosomes were constructed, and the frequency of detection of each band was estimated.