|Courtesy of Science|
The fruit fly circadian cycle shares three strong similarities with the mammalian: the per gene itself, CLOCK and BMAL regulation of per, and a gene called tau in hamsters and double-time (dbt) in flies, both of which encode the enzyme CKI*.
A better understanding of circadian rhythms promises to shed light on the mechanics of sleeping disorders, help optimize drug delivery, help night shifters improve alertness, and elucidate the anatomy of seasonal affective disorders and manic depressive illness. Potential applications, though, extend beyond humans to plants and animals whose photoperiodism might one day be adjustable so...
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