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Gene explains why people are night owls
By Roger Highfield, Science Editor
Last Updated: 2:58am BST 28/04/2007
Do you have the after-hours gene?
A genetic mutation called the "after-hours gene" may explain why some people are night owls, it is revealed in Science journal today.
Do you have the night owl gene?
It could also hold clues for pharmacologists working to develop drugs to help people adjust to shift work or jet lag. There are further implications for the study of causes of some psychiatric disorders.