Skin color is often one of the first traits people notice in each other. Studies in zebra fish uncovered a mutation that altered a transport protein and resulted in light-colored fish. This discovery led to the finding that the same gene in humans has a strong influence on skin pigmentation in many populations. The allele of the human transport protein associated with light skin is found almost exclusively in Europeans. The other common allele, which appears to be the ancestral allele, is found in Africans. Explain how you think the allele present in Europeans came to be so common in this population. Select all that apply. A. A mutation must have occurred in the population ancestral to modern Europeans after their migration to Europe. B. A mutation must have occurred in the population ancestral to modern Europeans before their migration to Europe. C. A mutation must have occurred in the population ancestral to modern Europeans either before or after their migration to Europe. D. The same mutations have occurred very often, so the allele became more and more frequent until it predominated in this population. E. This mutation gave a reproductive advantage to p
Skin color is often one of the first traits people notice in each other. Studies in zebra fish uncovered a mutation that altered a transport protein and resulted in light-colored fish. This discovery led to the finding that the same gene in humans has a strong influence on skin pigmentation in many populations.
The allele of the human transport protein associated with light skin is found almost exclusively in Europeans. The other common allele, which appears to be the ancestral allele, is found in Africans. Explain how you think the allele present in Europeans came to be so common in this population. Select all that apply.
| A. |
A mutation must have occurred in the population ancestral to modern Europeans after their migration to Europe. |
|
| B. |
A mutation must have occurred in the population ancestral to modern Europeans before their migration to Europe. |
|
| C. |
A mutation must have occurred in the population ancestral to modern Europeans either before or after their migration to Europe. |
|
| D. |
The same mutations have occurred very often, so the allele became more and more frequent until it predominated in this population. |
|
| E. |
This mutation gave a reproductive advantage to p |
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