Two populations of deer, one of them large and living in a mainla...

Question

Two populations of deer, one of them large and living in a mainland forest and the other small and inhabiting a forest on an island, regularly exchange members that migrate across a land bridge that connects the island to the mainland.If you compared the allele frequencies in the two populations, what would you expect to find?

Accepted Answer

Hey, everyone. Let's take a look at this question together, a population has the following genotype frequencies. We have the homozygous dominant A which has 0.49. The heterozygous is 0.42. And the homozygous recessive is 0.9. Based on the data presented above which of the following options accurately represents the allele frequencies. And we have four different answer choices containing a different allele frequency or that dominant A allele and that recessive A allele. So we have to determine which of the following answer choices has the correct combination of the allele frequencies or the dominant and recessive alleles. So looking at the genotype frequencies, we know that the homozygous dominant A is 0.49. So we have the homozygous dominant A equals 0.49. And we know that we have two dominant A alleles, which means that we multiply that dominant allele frequency by the dominant allele frequency in order to get 0.49. And so the number when multiplied by itself that gives us 0.49 is 0.7. So the dominant allele A is equal to 0. because 0.7 multiplied by 0.7 is equal to 0.49 which is that Homozygous dominant G N type frequency. And looking at our answer choices, we can see that answer choice B is the only answer choice where that dominant A allele is equal to 0.7. So answer choice B is the correct answer, which we also know that the homozygous recessive genotype frequency is equal to 0.9. And the recessive allele frequency is equal to 0.3. Since 0.3 multiplied by 0.3 is equal to 0.9, which 0.9 is the homozygous recessive genotype frequency. Thus confirming answer choice B as the correct answer, I hope you found this video to be helpful. Thank you and goodbye.

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