There was no transition from chimps to humans. There was a divergence from a common ancestor some time ago, after which both lines evolved equally (maybe, sort of, possibly) far along their own respective paths under different selection pressures. It’s very likely that you know this—I just happen to be very sensitive to this phrasing, since it’s one of the most often misunderstood aspects of evolution.
There was no transition from chimps to humans. There was a divergence from a common ancestor some time ago, after which both lines evolved equally (maybe, sort of, possibly) far along their own respective paths under different selection pressures. It’s very likely that you know this—I just happen to be very sensitive to this phrasing, since it’s one of the most often misunderstood aspects of evolution.