
Comparative great ape FISH of individual duplicons. Y-chromosomal species-specific differences are shown on the extracted Y chromosomes of HSA (H. sapiens), PTR (P. troglodytes), and GGO (G. gorilla). Comparative FISH experiments were performed with probes of duplicons from 1q32.1 (LLOYNC03″M″-53F07), 1p36.2 (WI2-2807L1), 1q43 (RPCI1-76F02) (Wimmer et al. 2002), and 21q21.3 (WI2-3090D6). Autosomal paralogous signals are summarized in Supplemental Table 7. In all experiments, the signals obtained on metaphase chromosomal spreads of the pygmy chimpanzee were concordant to those of the common chimpanzee.











