If there are four pairs of chromosomes, how many different combinations of chromosomes are possible?
A. 2
B. 32
C. 8
D. 4
E. 16
Answer: E
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A relationship in which two species intereact and
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A young farmer purchases some land in a relatively arid area and is interested in earning a reasonable profit for many years. Which of the following strategies would best allow the farmer to achieve such a goal?
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Pulmonary veins carry
A. a mixture of oxygenated and deoxygenated blood. B. deoxygenated blood. C. oxygenated blood.