Rhesus Macaque
<p>Oct 31, 2009 2:15 PM
 
brain is one fifth the size of humans  (? per body weight) (YES... adjusted for body weight)
monkey weighs  8 kg as compared to 70 kg for human.   (So,  monkey brain is NOT
one fifth of 1500 ml = 300 ml  but rather  one tenth of that, say about 30 ml or less)
 
chimps and humans share 98% of genes; diverged 6 million years ago.
macaques of human diverged 25MYA and share 93% of genes.
 
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