News of the WeekNeuroscience

Monarchs Check Clock to Chart Migration Route

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Science  23 May 2003:
Vol. 300, Issue 5623, pp. 1216-1217
DOI: 10.1126/science.300.5623.1216a

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By combining genetic and behavioral studies, as reported on page 1303, neurobiologists have established that monarch butterflies use an internal timepiece, apparently set by genes that are important to circadian rhythms, to fly in the right direction while migrating.

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