In regions where malaria is prevalent, the S allele is beneficial because:
A. it improves the ability of the hemoglobin to
carry oxygen.
B. it improves the ability of the immune
system to fight Plasmodium, the parasite that
causes malaria.
C. it causes red blood cells to distort, which
makes them less hospitable to Plasmodium,
the parasite that causes malaria.
D. it prevents mosquitoes from releasing
Plasmodium, the mosquito that causes
malaria, into the blood.
E. None of the answer options are correct.
C
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Two bird species compete in the forest for the same seeds. If ? = 0.75 and ? = 0.25, then (assuming the same carrying capacity for both)
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A solution contains 0.0000001 (10-7 ) moles of hydroxyl ions [OH-] per liter. Which of the following best describes this solution?
A) acidic: H+ acceptor B) basic: H+ acceptor C) acidic: H+ donor D) neutral
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