Which statement is about the molecular clock is false?
A) The proteins Clock and Cycle bind to form a dimer.
B) The Clock/Cycle dimer enhances DNA transcription of the genes for Per and Cry.
C) Per and Cry inhibit the Clock/Cycle dimer.
D) Clock and Cycle proteins eventually break down and the 24 hour cycle begins again.

Question

Quizplus · Accepted Answer

The statement D is false because it inaccurately describes the mechanism of the molecular clock. The proteins Clock and Cycle do not break down to restart the 24-hour cycle. Instead, the cycle is regulated through the accumulation and degradation of PER and CRY proteins, which inhibit the activity of the CLOCK/CYCLE dimer, leading to a feedback loop that creates the circadian rhythm.

Which Statement Is About the Molecular Clock Is False