One of the following statements was given in the film as the best way to understand genetic differences in human populations. Choose the correct statement that also offers the correct explanation.

a. Populations differ by distance…If we were to walk from the tropics to Norway, what we would see is a continuous change in skin tone. And at no point along that trip would we be able to say this is the place in which we go from the dark race to the light race.
b. For race to be more than skin deep, one has to have concordance. In other words, skin color needs to reflect things that are deeper in the body under the skin. But most of human variation is non-concordant. Skin color…is not correlated with height or weight and definitely not correlated with more complex traits like intelligence or athletic performance.
c. It’s one of the misconceptions that sickle cell disease is an African American or an African disease. Sickle cell trait is not uncommon in people from the Mediterranean region…Where malaria was common the sickling gene was selected—in Arabia, South Asia, Central and Western, but not Southern Africa.
d. If one were to walk across the globe, you would find that in colder climates, people are lighter in skin color due to less melanin production. In warmer climates, you would find people are darker in skin color due to more melanin production. This is a survival mechanism.

Answer: a. Populations differ by distance…If we were to walk from the tropics to Norway, what we would see is a continuous change in skin tone. And at no point along that trip would we be able to say this is the place in which we go from the dark race to the light race.

Explanation:

This is in relation to an interview of Joseph Graves, Jr., an evolutionary biology professor. He was of the opinion that when it came to the subject of skin tone, there is no single place we can say that people become white and people become dark.

He insists rather, that genetic differences such as skin tone, are mostly based on their geographical location such that those that are closer to each other share similar traits which reduces as they move further apart. This is why if we walked from the tropics northward, people progressively get lighter in complexion because they are sharing lesser and lesser traits.

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2.
A person needs to be able to determine main ideas and essential details when he is
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to seek peace with Great Britain
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b. contaminated wells
a.
C. pollution
d. acid rain
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ΟΑ
ОВ
ОC
OD

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A.true
B.false
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3#He had his own reality television show

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A.
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B.
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C.
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D.
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