Which of the following combinations represent prezygotic mechanisms of isolation?

a. hybrid breakdown and temporal isolation
b. hybrid breakdown and gametic isolation
c. hybrid sterility and temporal isolation
d. mechanical and temporal isolation
e. mechanical and hybrid breakdown


D

Biology & Microbiology

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Inbreeding reduces which of the following variances to near zero?

A. Genetic variance B. Environmental variance C. Both variances D. Neither variance

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What is the difference between mutualism and synergism?

A. In a synergistic relationship, both organisms benefit, but in a mutualistic relationship both organisms are harmed. B. In a mutualistic relationship, the organisms are dependent upon each other. C. In a synergistic relationship, the organisms cannot survive without each other. D. In a mutualistic relationship, both organisms benefit, but in a synergistic relationship both organisms are harmed.

Biology & Microbiology

The serosa is indicated by

a. A. b. B. c. C. d. D. e. E.

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Chemolithotrophs generally derive ________ ATP from oxidation of inorganic substrates because the reduction potentials of those substrates are much more ________ than the reduction potential of organic substrates.

A. more; negative B. less; negative C. more; positive D. less; positive

Biology & Microbiology