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Genetics & Genomics

The difference between humans and apes may reside in the genes

Published in Gene Therapy Weekly, October 20th, 2005

Big apes share more than 90% of our genome and still we are undoubtedly very different.

So what is it that gives us our unique "humanness" and higher intelligence' In an article about to be published in the journal Medical Hypotheses a group of Portuguese researchers propose that the differences which separate apes and humans, such as brain size and intellect, can be explained by differences in thyroid and steroid hormones.

It is now well-accepted that intelligence is dependent on brain size, and in fact the brain of an ape is approximately a third of the size a human's brain. This means "factors" known to affect brain size might be involved...

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