NEET UG BIOLOGY MCQ: EVOLUTION

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Although Darwin's natural selection theory well explained about evolution but there are some draw back. What is the Drawback of Darwinsm?

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Correct option: A

They do not explain about source of variation and cause of variation

Option A (They do not explain about source of variation and cause of variation) is correct because Darwin's theory of natural selection did not explain the source and cause of variations.

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The main point of Darwin’s theory is Which one of the following is not a vestigial structure in Homo sapiens? The brain capacities of Homo habilis were Assertion (A): In mammals the forelimbs perform different functions.

Reason (R): The forelimbs in different mammals consist of different sets of bones. Identify the phenomenon in which the members of a species do not interbreed with the members of other species or same species Assertion: Organic compounds first evolved in earth required for origin of life were protein and nucleic acid.
Reason: All life forms were in water environment only.