A male and female rat each has free-running circadian rhythms shorter than the normal 24 hours. Their offspring will most likely have a
A) shorter cycle (less than 24 hours) as well, indicating that circadian rhythms have a strong genetic component.
B) normal cycle (24 hours) , indicating that zeitgebers have the strongest influence on cycle length.
C) longer cycle (greater than 24 hours) , indicating that circadian rhythms have a strong genetic component.
D) longer cycle (greater than 24 hours) , indicating that zeitgebers have the strongest influence on cycle length.
Correct Answer:
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