Sunday, September 07, 2008

IF IT'S THIS COMPLEX WHO CAN DISCOVER THEIR ROBOTIC SELF?

The following means, I think, that specific behaviors are a process rather than a location on the DNA strand.

"Genes alone don’t make the man — after all, humans and chimps share roughly 98 percent of their DNA. But where, when and how much genes are turned on may be essential in setting people apart from other primates.

"A stretch of human DNA inserted into mice embryos revs the activity of genes in the developing thumb, toe, forelimb and hind limb. But the chimp and rhesus macaque version of this same stretch of DNA spurs only faint activity in the developing limbs, reports a new study in the Sept. 5 Science.

"The research supports the notion that changes in the regulation of genes— rather than changes in the genes themselves — were crucial evolutionary steps in the human ability to use fire, invent wheels and ponder existential questions, like what distinguishes people from our primate cousins."

From a ScienceNews web article by Rachel Ehrenberg

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