Sentences with phrase «chimpanzee brain size»

«So while genetics determined human and chimpanzee brain size, it isn't as much of a factor for human cerebral organization as it is for chimpanzees.»

The study found that human and chimpanzee brain size were both greatly influenced by genetics.

Not exact matches

She stood barely more than a meter tall and had a brain the size of a chimpanzee's.

With a volume of 1200 to 1500 cubic centimetres, our brains are three times the size of those of our nearest relative, the chimpanzee.

«They are very petite and have the brain size of chimpanzees.

They stand just over 1 metre tall, and have brains similar in size to chimpanzees, yet have advanced stone tools

Genes involved in microcephaly, a condition in which patients have brains roughly the size of chimpanzee brains, directly control the levels of BRCA1 expression, he says.

So a long - standing riddle has been where did our ancestors get that extra energy to expand their minds as they evolved from animals with brains and bodies the size of chimpanzees?

The team found that ARHGAP11B was also present in Neanderthals and Denisovans, human cousins with similarly sized brains, but not in chimpanzees, with which we share 99 percent of our genome — further support for the idea that this gene could explain our unusually large human brains.

Named Rudapithecus (the discovery was made near the village of Rudabánya, and pithecus is from the Greek for «ape»), the animal had a body and brain about the same size as those of a modern chimpanzee.

Researchers used to think that taking to two legs caused the size of human brains to outstrip our primate cousins the orang - utans, gorillas and chimpanzees.

Mutations in a gene called ASPM, for example, reduce the size of a human brain by up to 50 percent, making it about the same size as a chimpanzee's brain.

Despite the explosive growth in size and complexity of the human brain, the pace of evolutionary change among the thousands of genes expressed in brain tissue has actually slowed since the split, millions of years ago, between human and chimpanzee, an international research team reports in the December 26, 2006, issue of the journal, PLOS Biology.

Chimpanzees have brains that are one - third the size of human brains.

Chimpanzees have a brain size between 300 and 500 cc, with an average of 400 cc.

«In general, the additional brain size and connectivity of the human brain compared to the chimpanzee or macaque, along with the protracted period of time during which human neurodevelopment occurs, means that there are many more problems than can arise and a greater period of time during which those problems can occur,» Sestan explained.

However, the average brain size of chimpanzees is only about one - third of our average brain size.