Particle inside a protein makes us more intelligent than all other creatures | Mail Online

Particle inside a protein makes us more intelligent than all other creatures | Mail Online.

Nader-Nazemi-Human-Brains-Smart-size-Nader-Nazemi

Human brains are surprisingly large compared to the rest of the body

Soon we will be genetically modifying fetuses with super enlarged brains.

A minute particle within a protein allowed humans to become the most intelligent creatures on the planet, say scientists.

It holds the key to understanding why our brains are so much bigger and more complex than any other animal, according to new research. It may also explain how its unequalled mental capacity evolved so rapidly and dramatically, a mystery that has baffled researchers for decades.

‘This research indicates that what drove the evolutionary expansion of the human brain may well be a specific unit within a protein – called a protein domain – that is far more numerous in humans than other species.’ The protein domain issue is known as DUF1220.

Humans have more than 270 copies of DUF1220 encoded in their DNA, far more than other species. The closer a species is to humans, the more copies of DUF1220 show up.  Chimpanzees have the next highest number, 125. Gorillas have 99, marmosets 30 and mice just one.

Prof Sikela said: ‘The one over-riding theme that we saw repeatedly was the more copies of DUF1220 in the genome, the bigger the brain.

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