Unit 7: Biology of Skin Color

If you travel north from the equator, what generally happens to the intensity of ultraviolet (UV) light?

• intensity increases
• The intensity decreases
• The intensity stays the same
• It is impossible to predict.

The graph in Figure 2 summarizes the age at which people are diagnosed with melanoma, the most serious form of skin cancer. When would you see the most likely chance of developing skin cancer?

• 35-44
• 45-54
• 55-64
• 65-74

Do Biologists classify specific forms of traits as good or bad. For example, long tails in cats could be classified as good and short tails as bad.

• Yes, traits are always good or bad
• No, It depends on where they are found

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What is the evolutionary benefit for dark skin near the equator?

• Skin cancer protection
• Folate Protection
• It has no evolutionary relationship
• Easier vitamin D production

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What is the evolutionary benefit of light skin in the northern latitude.

• Skin cancer protection
• Folate Protection
• It has no evolutionary relationship
• Easier vitamin D production

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