Do the populations carrying these mutations have different variances in copulation durations? Carry out the appropriate test using α =0:05 Do these two mutations lead to different mean copulation durations? Carry out the appropriate test using α =0:05
Fruit flies have built-in circadian rhythms that keep time in the absence of external stimuli. Several genes have been shown to be involved in internal timekeeping, including per (period) and tim (timeless). Mutations in these two genes, and in other genes, disrupt timekeeping abilities. Interestingly, these genes have also been shown to be involved in other time-related behavior. Individuals that carry particular mutations of per and tim have been shown to copulate for longer than individuals that have neither mutation. The following table summarizes some data on the duration of copulation for flies that carry either the per mutation or the tim mutation:
|
Mutation |
Mean copulation duration (min) |
Standard deviation |
Sample size |
|
per |
17.5 |
3.37 |
14 |
|
tim |
19.9 |
2.47 |
17 |
- Do the populations carrying these mutations have different variances in copulation durations? Carry out the appropriate test using α =0:05
- Do these two mutations lead to different mean copulation durations? Carry out the appropriate test using α =0:05
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