Which of the following would not contribute to allopatric speciation ?

a. Geographic separation
b. Gene Flow
c. Genetic drift
d. Different selection pressures
e. Founder effect


Answer: b. Gene Flow

Biology & Microbiology

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Plants are raised under artificial lights turned off and on by an electric clock. Some are given long periods of light, others short periods. This is an example of:

A. deductive reasoning B. a hypothesis C. inductive reasoning D. an experiment E. a theory

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The main form in which sugars are transported in the phloem sap is

a. glucose. b. lactose. c. starch. d. sucrose. e. fructose.

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Carbohydrate digestion begins in the:

a. mouth b. esophagus c. stomach d. small intestine e. large intestine

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Which tissue assists in absorption and secretion, and in the movement of materials?

a. A b. B c. C

Biology & Microbiology