Passage I
SLEEPLESS is a fruit fly gene involved in sleep regulation. The normal form of this gene (S+) produces sleep factor protein; a mutant form (S-) does not produce the protein.
Researchers studied the sleep patterns and survival of flies of the same age that had the genotype S+S+, S+S- or S-S- . Figure 1 shows the amount of sleep, and the number of sleep events, per day per fly for each genotype. Figure 2 shows the amount of recovery sleep (additional sleep needed following 6 hr of sleep deprivation) per day per fly for each genotype. Figure 3 shows how percent survival varied with age for each genotype.
4. According to Figure 1, the amount of sleep per day per fly for the S-S- genotype was approximately what percent of the amount of sleep per day per fly for the S+S+ genotype?
Your Answer is
Correct Answer is F
Explanation
From the first picture in figure 1, we can see that the amount of sleep per day per fly corresponding to SS- is 100 min, while S+S+ is 900 min, so it is closest to 10% of the answer