THIRTEENTH RIB
Our closest cousins, chimpanzees and gorillas, have an extra set of ribs. Most of us have 12, but 8 percent of adults have the extras.
If I'm incorrect, I stand corrected. However, this article is now all over the web.
closest cousins, chimpanzees and gorillas, have an extra set of ribs
Are you suggesting that we evolved for apes? If so, I would have one question, if we did, then how come there are still apes?