Based on the theory of natural selection, how would a beneficial mutation change the gene pool?
a. The beneficial mutation would spread slowly throughout the population increasing the
frequency of the mutation.
b. The beneficial mutation would spread rapidly throughout the population increasing the
frequency of the mutation.
c. The beneficial mutation would not spread throughout the population so the gene pool
would not be affected.
d. The beneficial mutation would spread rapidly throughout the population increasing the
frequency of the mutation, but then slow down over time.
a. The beneficial mutation would spread slowly throughout the population increasing the
frequency of the mutation.
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Pathogenicity islands are
A. enzymes like proteases and hemolysins that promote pathogenesis. B. gene clusters that confer the ability to become pathogenic. C. a lymphoid tissue present in the small intestine. D. closely related groups of pathogenic enteric organisms.
Of the following organs, which is NOT in the
abdominal cavity? a. stomach b. liver c. heart d. intestine e. pancreas
This is a squamous cell
a. A b. B c. C d. D e. E
Which of the following statements is NOT true about Fred Griffith's experiments?
a. Mice injected with smooth (S) bacteria die. b. Mice injected with heat-killed smooth bacteria die. c. Mice injected with heat-killed smooth bacteria and d. Mice injected with rough bacteria live. e. Smooth bacteria are transformed into harmless rough live rough (R) bacteria die.bacteria.