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Human and chimpanzee DNA differ by only 1.2 percent

A study found that the PTERV1 virus, which infected chimpanzees 4 million years ago, introduced a DNA mutation affecting brain development. Humans and chimpanzees differ by only 1.2 percent in their DNA.

Field
the brain and neuroscience
What they did
Researchers discovered that an ancient retrovirus, which infected chimpanzees about 4 million years ago, introduced a mutation into their DNA that affected brain development.
Why it matters
This helps explain why chimpanzees and humans, despite having similar genes, develop very different types of brains.
#retrovirus#genomics#brain development#evolution#dna mutation

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