Online edition of India's National Newspaper
Thursday, Jan 10, 2008
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Online edition of India's National Newspaper Thursday, Jan 10, 2008 ePaper | Mobile/PDA Version |
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Monarch butterflies MEXICO CITY: Scientists have discovered genetic information that helps explain how monarch butterflies find their way from Canada to winter nesting grounds in the mountains of Mexico. The study, published online on Tuesday in the PLoS Biology Journal and the Public Library of Science, found that the butterflies’ biological clocks help them use the sun as a compass. Steven Reppert, the University of Massachusetts neurobiologist who led the study’s seven-member research team, said monarch butterflies have unique circadian clocks, which regulate daily activities like sleep and hunger. — AP
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