What happens to phytochromes after several days of dark, rainy weather?
A) Pr absorbs darkness and converts to Pfr.
B) Pr stimulates flowering.
C) Pr and Pfr become unstable and both are destroyed.
D) Pr and Pfr are both formed from inactive phytochrome.
E) Pfr spontaneously reverts to Pr.
Correct Answer:
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