Figure 1.

Results of FISH for BAC 136B17 (from human chromosome 4p) on selected members of the primate panel. In human (A), this clone hybridizes to the 4p telomere (large arrows) and to the 1p telomere (small arrows), with the signal intensity being greater on chromosome 4p. Only one hybridization signal (large arrows) is observed for this clone in chimpanzee (B) and macaque (C), both of which correspond to the region orthologous to the human 4p telomere. Similar results were obtained for gorilla, orangutan, and baboon.