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Lab 47

Lab 47

Q Question 1 1 / 1 pts (Q002) Review Figure 8.2 on p. 231 of your lab manual. Note that skin colors are a little lighter in equatorial parts of the Americas than they are in equatorial Africa. Why might this be the case? (Hint: Think about the possible effects of evolutionary forces other than natural selection.) Question 2 1 / 1 pts (Q003) In Exercise 3, you considered the adaptations of people living in the Andes. What other adaptations do you think would be beneficial to indigenous people who live in similar high-altitude environments? Are there any other places in the world where you might expect to find populations with these adaptations to high altitude? (Use information found in your classroom, online, or in books to answer this question.) Question 3 1 / 1 pts (Q004) Bergmann's and Allen's rules apply to many animals, not just humans. Use material in your classroom, online, or in books to locate images of a black-tailed jackrabbit (Lepus californicus) and a snowshoe hare (Lepus americanus). Based on what you can see in the images, which of these hares is adapted for a cold climate? Which is adapted for a hot climate? What adaptations do they have to suit their respective environments? Do humans living in similar climates share the same adaptations?

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1.Your Answer: Skin colors might be a little lighter in equatorial parts of the Americas than in equatorial Africa due to a complex mix of factors, including genetic patterns related to skin color, differences in UV radiation, and cultural practices such as diet and clothing. The specifics of any skin color variation are likely to be multifactorial in nature. 2.Your Answer: Other potential adaptations that may be beneficial to indigenous people living in high-altitude environments include increased lung capacity, alterations in red blood cell production, improved circulation, and changes in metabolism to optimize energy utilization in low-oxygen conditions.