Which of the following statements about human skin color is FALSE?
A. Light skin is a selective disadvantage in the tropics, because it is more susceptible to the destruction of the folate that is needed to produce folic acid to protect against neural tube defects in human embryos.
B. Light skin is a selective advantage outside the tropics, because it admits ultraviolet radiation, which causes the body to manufacture vitamin D and thus prevents rickets and osteoporosis.
C. The amount of melanin in the skin affects the body's production of vitamin D.
D. The amount of melanin in the skin affects the body's ability to process lactose.
E. Skin color varies because of differences in ultraviolet radiation between different regions of the world.
Answer: D
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What will be an ideal response?
For now, the most comprehensive analyses indicate that the recently discovered hominin species H. floresiensis evolved on the island of
a. Hawaii. b. Easter Island. c. Java. d. Guam. e. Flores.
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a. Christopher Columbus. b. the ancient Egyptians. c. J. F. Blumenbach. d. C. Linnaeus. e. Chaka Zulu
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a. It can support a higher population density. b. It takes less time and energy. c. It alters the natural environment less. d. It supports a higher quality of life.