1) Whenever a species undergoes selection (from evolution), variations can be identified in the genome. What
gene controls the production of melanin? 2) Nina believes that instead, selection for dark skin occurred because UV light breaks down what important nutrients needed for embryonic development and sperm production? 3) UVB is critical for the production of what essential vitamin? 4) What disease may occur in people who have low levels of Vitamin D? 5) which of the following groups is most at risk for developing this disease? a) children w/ dark skin b) adults c) children w/ light skin 6) tribes of people living in high altitudes have a greater exposure to uv light than those at lower elevations. what skin type would you expect them to have? what evidence or reasoning can you provide for this?