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Body clocks keep migrating monarchs on course, Science study shows

ense of time.

Reppert's team also found that, while UV light is required for sun compass navigation, some other wavelength of light was required for entraining the butterflies' clocks. This difference may provide a means for untangling the two biological processes.

"The light input pathways are quite distinct, so tracking those pathways in may eventually lead us to the cellular level where this clock-compass interaction is occurring," Reppert said.


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Contact: Lisa Onaga
lonaga@aaas.org
202-326-7088
American Association for the Advancement of Science
22-May-2003


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