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Question: The frequency of allele A1 on the mainland is 0.2, while the initial frequency of allele A1 on a nearby island is 0.8. If migrants move from the mainland to the island continuously over many generations, what will be the equilibrial abundance of A1?

Question: The frequency of allele A1 on the mainland is 0.2, while the initial frequency of allele A1 on a nearby island is 0.8. If migrants move from the mainland to the island continuously over many generations, what will be the equilibrial abundance of A1?

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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Migration O One way migration from a large mainland to a small island, assuming that the alleles have an equal effect on fitness, will result in the island becoming like the mainland. This assumes that allele frequencies on the mainland do not change because the mainland is large enough to be in HW equilibrium. See p. 250. .* If migration is one way and continuous, we can show that pi* = pm, where pi* is the equilibrial abundance of A1 on the island and pm is the abundance of A1 on the mainland. This makes sense, since eventually the allele frequencies on the mainland will simply swamp the allele frequencies on the island. Example: The frequency of allele A1 on the mainland is 0.7, while the initial frequency of allele A1 on a nearby island is 0.3. If migrants move from the mainland to the island continuously over many generations, what will be the equilibrial abundance of A1? ● Answer: 0.7 ■ Question: The frequency of allele A1 on the mainland is 0.2, while the initial frequency of allele A1 on a nearby island is 0.8. If migrants move from the mainland to the island continuously over many generations, what will be the equilibrial abundance of A1?
Transcribed Image Text:Migration O One way migration from a large mainland to a small island, assuming that the alleles have an equal effect on fitness, will result in the island becoming like the mainland. This assumes that allele frequencies on the mainland do not change because the mainland is large enough to be in HW equilibrium. See p. 250. .* If migration is one way and continuous, we can show that pi* = pm, where pi* is the equilibrial abundance of A1 on the island and pm is the abundance of A1 on the mainland. This makes sense, since eventually the allele frequencies on the mainland will simply swamp the allele frequencies on the island. Example: The frequency of allele A1 on the mainland is 0.7, while the initial frequency of allele A1 on a nearby island is 0.3. If migrants move from the mainland to the island continuously over many generations, what will be the equilibrial abundance of A1? ● Answer: 0.7 ■ Question: The frequency of allele A1 on the mainland is 0.2, while the initial frequency of allele A1 on a nearby island is 0.8. If migrants move from the mainland to the island continuously over many generations, what will be the equilibrial abundance of A1?
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