Human speech is thought to have emerged 100,000 to 200,000 years ago, some five million years after chimps and humans took divergent paths on the tree of evolution. Photo: iStockphotoFrom Cosmos:
PARIS: Two minute evolutionary changes in a gene that is otherwise identical in humans and chimps could explain why we have fully fledged power of speech while other primates do not.
The findings may also point to new drug targets for hard-to-treat diseases that disrupt speech, such as schizophrenia and autism, said a study detailed in the British journal Nature today.
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