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Biology

The Neurobiology of Circadian Rhythms and Activity Patterns in Fruit Flies

Quick fact

Fruit flies have about 150 dedicated clock neurons in their brains; mutations in the 'period' gene can make them run on a 19-hour day or even be completely arrhythmic.

Why this is interesting

Fruit flies are tiny, but they wake and sleep on a precise 24-hour schedule—just like you. How does a fly's brain keep track of time?