[GodGunsGuts]

==Experts agree that humans split off from a common ancestor with chimpanzees several million years ago and that gorillas and orangutans split off much earlier.

It would seem YOUR "experts" are starting to question the Temple of Darwin's Human-Chimp catechism:

Fig.1

"To understand why regions in the human genome can differ in their evolutionary history, it needs to be acknowledged that genetic lineages represented by DNA sequences in the extant species trace back to allelic variants in the shared ancestral species (Nei 1987) (fig. 1). In here, these variants persist until they join in their most recent common ancestor (MRCA). Some genetic lineages, however, do not coalesce in the progenitor exclusively shared by humans and chimpanzees. They enter, together with the lineage descending from the gorilla, the ancestral population of all 3 species, where any 2 of the 3 lineages can merge first. Thus, in two-thirds of the cases, a genealogy results in which humans and chimpanzees are not each other's closest genetic relatives. The corresponding genealogies are incongruent with the species tree. In concordance with the experimental evidences, this implies that there is no such thing as a unique evolutionary history of the human genome. Rather, it resembles a patchwork of individual regions following their own genealogy."

Mapping Human Genetic Ancestry. Molecular Biology and Evolution 2007 24(10):2266-2276; doi:10.1093/molbev/msm156

[allmendream]

You are still trying to argue that any overlap that puts humans closer to gorillas outweighs the overwhelming pattern of human and chimp’s greater similarity.

Once again your selective quotation of data does not reflect the authors conclusions.

http://mbe.oxfordjournals.org/cgi/content/full/24/10/2266

In summary, our study highlights the extent and implications of the intertwined genetic relationships between humans, chimpanzees, and gorillas. Clearly, a comprehensive understanding of how humans evolved their unique characteristics, which distinguishes them from all other extant species, depends essentially on our knowledge of the evolutionary history of our genes. From this perspective, an extensive sequencing of the gorilla genome will be required to make full use of the chimpanzee genome sequence on the way toward a map of our genetic ancestry.

[allmendream]

Here is their Fig 4. Notice their estimates of splitting time for the human chimp lineage and the gorilla lineage.