Proposed Hominoid Phylogeny: relationships of hominoids based on the analysis of differences in banding patterns of their chromosomes, and tracing their most likely sequences of change. The specific chromosomes are represented by their numbers (and X or Y) in the lines of ancestry, along with the particular species sharing those chromosomes: Human (H), Chimpanzee (C), Gorilla (G), and Orangutan (O). For example, before the divergence of humans and chimpanzees took place, their ancestor shared similar chromosomes 2p, 7, and 9 (human-chimpanzee ancestor). Humans then diverged by fusion of chromosomes 2p and 2q into chromosome 2 and by a small pericentric inversion in chromosomes 1 and 18. From Yunis, J.J, and O. Prakash, 1982. "The origin of man: A chromosomal pictorial legacy." Science, 215: 1525-1529.

Hominoid Cladogram derived from the phylogeny suggested above by Yunis and Prakash. Lengths and positions of arrow lines reflect the numbers of chromosome changes, relative timing, and likely relationships shown in their diagram. "A" refers to "Ancestral" origin proposed for these hominoids.

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