In one family that has a mutation in the gene responsible for their PER protein, behavior changed in what way?
A) They had REM sleep but no non-REM sleep.
B) They sometimes experienced several consecutive days of insomnia.
C) They liked to go to bed early and wake up early.
D) They suffered sudden attacks of sleepiness during the day.

Question

Quizplus · Accepted Answer

The mutation in the PER gene made the affected family members prefer to go to bed earlier and wake up earlier, which is consistent with the behavioral trait of "morning larks" or having a "advanced sleep phase syndrome."

In One Family That Has a Mutation in the Gene