Variations In Human Skin Color
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- 1.Resource #1 1. What are some traits that people share? Check three.
- A.
Environmental factors like sunlight, temperature and food supply.
- B.
Males and females have similar sexual characteristics with others of their gender.
- C.
Relatives share similarities in appearance due to their common genetic make up.
- D.
People with ancestors from the same regions of the world often share similar physical characteristics like skin, hair color, facial characteristics, body shape, and stature.
- 2.2. Besides genetics, what other factors can affect a person’s appearance and growth?
- A.
Exposure to ultraviolet rays (UV) can darken or tan a person’s skin.
- B.
Exposure to ultraviolet rays (UV) can alter genetic characteristics.
- C.
Varying UV causes no impact.
- 3.3. Why do sub-Saharan Africans have the same dark skin color as many people in places like southern Asia and Australia? Pick two.
- A.
Environmental factors
- B.
Genetics
- C.
Apparel opportunities
- 4.4. How has racial classification been used in North America? Choose three.
- A.
They represent cultural differences in our society.
- B.
They have been used to assign undisclosed information.
- C.
They have been used to enlighten people's awareness.
- 5.5. Skin color a good way to classify people, because people respond to their __________________ adaptions.
- 6.Resource #2 6. How does melanin determine skin color? Check three.
- A.
Pheomelanin, which is red to yellow in color and is produced by those with light complexions
- B.
Eumelanin, which is dark to black in color and is produced by those with dark-colored skin.
- C.
Melanin causes increased radioactivity.
- D.
People also differ in the number and size of their melanin particles.
- 7.7. ________________________ serves as a shield for UV exposure.
- 8.8. Besides melanoma, what other conditions does melanin shield against?
- A.
Helps the eyes filter light.
- B.
Helps the body clean bacterial impurities.
- C.
Helps the body maintain healthy folic-acid levels.
- 9.9. Some shortwave ultraviolet radiation (UVB) exposure important. What does vitamin D do to assist the body? Choose three.
- A.
Helps in converting oxygen to blood cells.
- B.
Helps the body absorb calcium.
- C.
Helps the body absorb phosphorus.
- D.
Helps in bone growth and repair.
- 10.10. Historically, people with darker pigmented skin live with 20 degrees of the _______________________ .
- 11.Resource #3 11. Jablonski and Chaplin concluded that modern humans most likely evolved in the __________________, where they were exposed to high UV levels.
- 12.12. In what way do Jablonski and Chaplin see skin color as “a balancing act”? Check two.
- A.
Between dietary nutritional needs.
- B.
Between the evolutionary demands of photo-protection
- C.
Between the need to create vitamin D in the skin.
- D.
Between the evolutionary demands of hunter gatherers.
- 13.13. Eskimos in Alaska have dark skin, beacuse their traditional _______________ is rich in fish and other seafood, which are high in vitamin D.
- 14.14. Are dark-skinned people at an advantage or disadvantage in northern latitudes?
- A.
Advantage
- B.
Disadvantage
- 15.15. DNA research has shown that genetically all humans, regardless of skin color and other surface distinctions, are basically the __________________ .
- 16.16. Our and many other societies have developed elaborate systems of ________________ and _______________ based on perceived racial differences.
- A.
Privilage
- B.
Respect
- C.
Control
- D.
Education
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