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Ch. 26 - Population and Evolutionary Genetics

Chapter 25, Problem 10

Consider a population in which the frequency of allele A is p=0.7 and the frequency of allele a is q=0.3 and where the alleles are codominant. What will be the allele frequencies after one generation if the following occurs?

wAA=1, wAa=0.9, waa=0.8

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Video transcript

Hello everyone and welcome to today's video. So what is the frequency of the recessive? A leo in a particular population? If the frequency of the dominant A leo is 0.7? Well, I want you to recall from previous videos the equation for the hardy Weinberg equilibrium here for this equation we have that P plus Q equals one. This P is going to be the frequency of the dominant and leo which is given in our problem to be 0.70 point seven plus Q is equal to one. If we move the 0.7 to the right side of the equation, we have, the Q is equal to one -0.7 and Q is equal to 0.3. So this is the frequency of the recessive allele in the population, which is going to be given by answer choice C. I really hope this video helped you and I'll see you on the next one.