
Tiny Genetic Tweak From An Ancient Virus Might've Prevented Chimpanzees From Developing Brains Like Ours
A study found an ancient virus that infected chimps but not humans may have switched off a key gene, helping explain why human brains grew so much larger.
Humans and chimpanzees are remarkably similar, despite the major differences in how our societies have panned out.
A new study published in Science Advances found an ancient retrovirus that infected chimpanzees about 4 million years ago may have shaped how our brains differ.
The virus inserted DNA into chimp genomes that switches off a gene called LINC00662, which in humans helps brain cells mature and grow extensions, the researchers found.
The finding helps explain why human brains are roughly three times larger than chimp brains despite our DNA being 98.8 per cent identical.
The study found the virus inserted DNA that switches off a gene called LINC00662 in chimps, which in humans helps brain cells mature and grow, experts say.
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