Thursday, March 22, 2007

Scientists teach mice to see in color

From Nature:
Simply by inserting a piece of DNA that codes for a human eye pigment into the genome of a mouse,scientists have introduced a rainbow array of colour to the dull mix of yellows, blues and greys that normally make up a mouse's visual world.

This suggests that the mammalian brain is very flexible and can interpret signals not normally encountered. It also hints that just a single genetic mutation could have added reds and greens to the visual palette of our ancestors tens of millions of years ago.

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