Which of the following is required for natural selection to occur in a population?
A. accumulation of adaptive traits
B. differential reproduction
C. heritable variation
D. All of the choices are correct.
Answer: D
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Four of the five terms listed below describe sets of
chromosomes with extra numbers. Select the exception. a. polyploid b. tetraploid c. diploid d. triploid e. hexaploid
Refer to the accompanying figure. Assuming the pattern remains the same, what will the population experience in 50 years?
a. slow growth
b. rapid growth
c. steady state growth
d. negative growth
e. No prediction can be made using these data.
How do most bacteria reproduce?
What will be an ideal response?
One way that substances move between blood and interstitial fluid is by
A) alternatively breaking and regenerating membranes of cells lining capillaries. B) osmosis. C) pressure-driven flow through clefts between the epithelial cells of the capillary wall. D) active transport utilizing ATP.