Mutations that confer no apparent selective advantage or disadvantage in a particular environment are

said to be selectively



a. random.
b. deleterious.
c. neutral.
d. benign.
e. stabilizing.


C

Biology & Microbiology

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A high-affinity antibody binds nonspecifically and loosely to antigen

Indicate whether the statement is true or false.

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Modified Thayer-Martin (MTM) agar

A) incorporates antibiotics into the medium. B) enhances the growth of normal flora. C) prevents the growth of Neisseria gonorrhoeae, but promotes the growth of Neisseria meningitidis. D) prevents the growth of Neisseria meningitides, but promotes the growth of Neisseria gonorrhoeae.

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A behavioral pattern can be triggered by a(n):

a. circadian rhythm. b. environmental stimulus. c. positive reinforcement. d. psychological stimulus. e. sign stimulus.

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Which of the following is not an abiotic component of an ecosystem?

A. soil type B. decomposers C. amount of rainfall D. temperature E. amount of sunlight

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