EVOLUTION
EVIDENCE FOR EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It forms new traits.
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It acts on variable traits.
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It forms new genetic material.
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It acts on genetic material directly.
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Detailed explanation-1: -Answer and Explanation: The correct answer is E) It requires genetic variation, results in descent with modification, and involves differential reproductive success.
Detailed explanation-2: -Natural selection can act on traits determined by alternative alleles of a single gene, or on polygenic traits (traits determined by many genes). Natural selection on traits determined by multiple genes may take the form of stabilizing selection, directional selection, or disruptive selection.
Detailed explanation-3: -The four propositions underlying Darwin’s theory of evolution through natural selection are: (1) more individuals are produced than can survive; (2) there is therefore a struggle for existence; (3) individuals within a species show variation; and (4) offspring tend to inherit their parents’ characters.
Detailed explanation-4: -Answer and Explanation: Of the given statements, the most accurate is that evolution by natural selection requires a genetically diverse population to be put through some kind of environmental pressure and selection.