19. People with red hair have significantly higher incidence of melanoma than other people because: a. The pigment makin

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19 People With Red Hair Have Significantly Higher Incidence Of Melanoma Than Other People Because A The Pigment Makin 1 (38.86 KiB) Viewed 132 times

19. People with red hair have significantly higher incidence of melanoma than other people because: a. The pigment making the red hair is also found in freckles. Upon exposure to UV light, the pigment generates free radicals, which damage DNA, increasing cancerous mutations. b. Family lineages with red hair evolved over many generations in environments with little UV light exposure, and therefore did not evolve resistance to UV damage. C. For biochemically unrelated reasons, people with red hair typically have less UV- absorbing skin pigment (melanin) to protect them from UV-induced DNA damage. d. The gene for red hair is linked to a mutation in ERCC1, a critical gene in the DNA damage excision repair pathway that repairs UV-induced DNA damage.