Ch. 25 - The History of Life on Earth
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Problem 4
Adaptive radiations can be a direct consequence of three of the following four factors. Select the exception. a. vacant ecological niches b. genetic drift c. colonization of an isolated region that contains suitable habitat and few competitor species d. evolutionary innovationProblem 5
Which of the following steps has not yet been accomplished by scientists studying the origin of life? a. synthesis of small RNA polymers by ribozymes b. formation of molecular aggregates with selectively permeable membranes c. formation of protocells that use DNA to direct the polymerization of amino acids d. abiotic synthesis of organic molecules
