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professor190 [17]
3 years ago
15

Sickle cell anemia is a disorder common in the sub-Saharan region of Africa. Although sickle cell anemia is generally fatal, hav

ing one allele for the disorder is also known to make a person resistant to malaria. Research shows that in the areas where malaria is most common, the sickle cell trait is seen in more than 40% of the total population.
A bioaccumulation
B geographic isolation
C interbreeding
D natural selection
Biology
1 answer:
Anna11 [10]3 years ago
7 0

the answer to this question is d

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Surface currents in the Northern Hemisphere rotate in a _______ direction. In the Southern Hemisphere, the surface currents rota
trapecia [35]

Explanation:

Surface currents in the Northern Hemisphere rotate in a Clockwise direction whereas in  the Southern Hemisphere, the surface currents rotate in a anticlockwise direction. This happens because of the Coriolis effect, because of this Coriolis effect surface currents are shifted to angle of 45°. Therefore, it deflects the current towards right in northern hemisphere and towards left in southern hemisphere.

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What is the result of fossil fuels being used more rapidly than they are formed?
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<span>The reserves will eventually be used up. </span>
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The cell membrane of a red blood cell will allow water, oxygen, carbon dioxide, and glucose to pass through. Since other substan
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The best answer is B (semi permeable)
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8 0
4 years ago
(c) For each cross, describe whether genetics or temperature determines the sex of progeny produced from eggs incubated at 35°C
ser-zykov [4K]

Answer:

Your question is incomplete.

Explanation:

Although this is a correct statement, since in the species of land turtles the temperature is a determinant of sex.

If the egg is exposed to temperatures below 40-38 degrees Celsius, the sex will tend to be male or male, and if a temperature of 40 degrees Celsius occurs constantly throughout the incubation, it will be female.

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