A· ! \"E .11Normal ITNo Spac.\" Heading 1 Heading 2 Title ph that the skin color

Question

A· ! "E .11Normal ITNo Spac." Heading 1 Heading 2 Title ph that the skin color is darker near the equator and lighter as you move north or south 9. Do these data support your hypothesis from Question 57 Justify your answer. The data indicates that darker skin individuals tend to live around the equator where Uv intensity is the highest. 10. Based on what you know about skin pigmentation so far, suggest a m intensity could provide a selective pressure on the evolution of human skin color. In other words, propose a hypothesis that links skin color to evolutionary fitness. echanism by which UV -I hypothesis that melanin protects an individual from skin cancer and protects circulating folate from being broken down by UV radiation PART 2: What Was the Selective Pressure? 11. What does it mean for a trait, such as light skin coloration, to be under negative selection in equaorial Africa? Relate negative selective pressure to what we know about MC1R allele diversity among African populations. When a trait is under negative selection it means that there is a selection against that trait. The researchers found that people with African ethnicity have very little variation of MC1R alleles and that almost everyone has the allele associated with the darker skin trait 12. Why does Dr. Jablonski dismiss the hypothesis that protection from skin cancer provided election for the evolution of darker skin in our human ancestors?

Explanation / Answer

Answer

No, question 10 hypothesis is not a probable hypothesis because according to Dr. jablonski selection a new trait in the environment is based on the natural selection. The mutation in skin cell is a somatic mutation it not passes
to next generation. So it not comes under natural selection.So we reject the hypothesis what we previously considered.

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