Speech gene explains why we talk: Study

WASHINGTON: Chimps, our nearest relatives, don't talk. We do. Now scientists have pinpointed a mutation in a gene that might help explain the difference.

The mutation seems to have helped humans develop speech and language. It's probably not the only gene involved, but researchers found the gene looks and acts differently in chimps and humans, according to a study published online yesterday by the journal Nature.

Lab tests showed that the human version regulated more than 100 other genes differently from the chimp version. This particular gene - called FOXP2 - mutated around the time humans developed the ability to talk.