Who winds body clock?
Submitted by rummykhan on Tue, 2010-11-30 16:52
WITH the first sunrays in the morning, mouse-ear cress raises its leaves and then lets them droop as the sun sets. Just like honeybees know when to set out to collect nectar. Most organisms have a built-in clock that regulates their biological functions on a roughly 12-hour schedule. Though researchers have identified genes that follow the circadian clock, what gears the clock remained unknown, until now.
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http://www.downtoearth.org.in/node/2283
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dte