. Fruit flies, like almost all other living organisms, have built-in circadian rhythms that keep time even 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, such as the frequency of wingbeats in male courtship behaviors. Individuals that carry particular mutations of per and tim have been shown to copulate for longer than individuals that have neither mutation. But do these two mutations affect copulation time in similar ways? The following table summarizes some data on the duration of copulation for flies that carry either the tim mutation or the per mutation (Beaver and Giebultowicz 2004): Mean copulation duration (min) Standard deviation of Sample size (n) Mutation copulation duration per 17.5 3.37 14 tim 19.9 2.47 17 a. Do these two mutations lead to different mean copulation durations? Carry out the appropriate test. b. Do the populations carrying these mutations have different variances in copulation duration?

. Fruit flies, like almost all other living organisms, have built-in circadian rhythms that keep time even 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, such as the frequency of wingbeats in male courtship behaviors. Individuals that carry particular mutations of per and tim have been shown to copulate for longer than individuals that have neither mutation. But do these two mutations affect copulation time in similar ways? The following table summarizes some data on the duration of copulation for flies that carry either the tim mutation or the per mutation (Beaver and Giebultowicz 2004): Mean copulation duration (min) Standard deviation of Sample size (n) Mutation copulation duration per 17.5 3.37 14 tim 19.9 2.47 17 a. Do these two mutations lead to different mean copulation durations? Carry out the appropriate test. b. Do the populations carrying these mutations have different variances in copulation duration?

Name: ). Fruit flies, like almost all other living organisms, have built-in
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Description: ). Fruit flies, like almost all other living organisms, have built-in circadian rhythms that keeptime even in the absence of external stimuli. Several genes have been shown to be involvedin internal timekeeping, including per (period) and tim (timel

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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