(For some time, studies concerning the commonality between chimps and humans modified the commonality of 99% to a commonality of only 94%, showing that the genetic gap between humans and chimpanzees was far larger than originally thought, but more recent knowledge states the difference between humans, chimpanzees, and bonobos at just about 1.0–1.2% again.)
Studies exploring the similarities between chimps and humans have fluctuated, initially suggesting a 99% commonality but later revealing a gap of 94%.  More recent research suggests that the difference between humans, chimpanzees, and bonobos is closer to 1.0–1.2%, indicating a smaller genetic divide than previously believed.