Biology of Skin Color Video Questions

Chunk 1

Start: 0:001. Explain how human skin is different from other organs in the body?

2. Dr. Nina Jablonski states that biological traits are neither good nor bad. What does she mean by this statement and why might this statement be relevant to our society today?End: 1:30

Chunk 2

Start: 1:303. What do Biological anthropologists do?

4. How do we see color?

5. What are pigments and how do they interact with light?

6. Describe the relationship between melanin, melanosomes and melanocytes.

7. What are the two types of melanin?

8. What determines the type and amount of melanin produced in your body?End 3:35

Chunk 3

Start 3:35• How does Melanin protect us from Ultraviolet Radiation and why do

we need this protection?

• List some other ways melanin is important to living things.

• Predict: Do you think there is a connection between UV radiation and skin color? Explain your hypothesis.

End 5:52

Chunk 4

• How did NASA and her husband (the cartographer) help Dr. Nina Jablonski?

• What affects the amount of UV radiation? (3 things)

• How is skin color measured?

• How did the UV radiation map and the skin color measurement map correlate?

• Why did different skin types evolve

Chunk 5

• Start 9:07• How can DNA sequencing help us determine when human skin color

began to change

• What is the MC1R gene and how does it relate to skin pigmentation?

• Stop11:30

Chunk 6

• Start: 11:30• Why is cancer not the selective pressure for dark skin?• What is the connection between UV radiation, skin color and

reproductive success

• Why is folate important to the body and why does it need melanin?END: 13:32• • Start: 13:32

Chunk 7

• Start: 13:32• Explain the reasoning for why we would evolve lighter skin.

• Why do we need Vitamin D?

•Why do indigenous people who live in the arctic still have dark skin?• • End 16:05

Chunk 8

• Start 16:05• Think about your family and your skin tone. Where did most of your

ancestors come from? Do their skin tones match the environment?

• Who would need to take Vitamin D supplements here in Idaho? Especially during the winter?

• Does your skin tone affect other traits?

• Have you ever felt judged or stereotyped due to the color of your skin?

• • END