Did a Copying Mistake Make Humans So Smart?


MEDICINE
Did a Copying Mistake Make Humans So Smart?[discovery.com]May 07, 2012
 
   As DNA replicates, damages may occur. In certain circumstances, DNA will actually duplicate parts of existing genes. The result of this is that the new, duplicated gene can be manipulated with minimal repercussions on the host (as the original gene still exists.)

Scientists have found, by activating similar genes in mice, that a past duplication and then manipulation in human DNA might have contributed to the current complexity of our brains.
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