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Chrysalis: The Meaning Of The Circadian Clock In Butterfly

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The circadian clock in monarch not only determine when an adult butterfly will emerge from its chrysalis, but it is also involved in the time-compensated sun compass. Previous studies have shown that circadian clock provides the internal timing deceive that allows the butterfly to correct their fight orientation. If the circadian clock in the monarch is destroyed, it destroys the migrant’s ability to calibrate their orientation based on time of day. The circadian clock mechanism is known in the butterfly, it relies on a negative transcriptional feedback loop that involves the transcription factors CLOCK (CLK) and CYCLE (CYC), which drive the expression of period(per), timeless (tim) and a vertebrate-like cryptochrome, designated cry2. The translated

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