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1a) What is the initial frequency of a new mutation on a diploid chromosome?

1b) Assuming an equal # of breeding males and females, what is the initial frequency of a new mutation arising on the X chromosome?

1c) Assuming neutrality, what is the probability that a new mutation on a diploid chromosome reaches fixation?

1d) How might positive selection acting on this new mutation affect the probability that it reaches fixation?

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