Assertion :The establishment of reproductive isolations in an event of biological significance. Reason: In the absence of reproductive isolation species can merge back into single population.

Both assertion and reason are correct and reason is the correct explanation for assertion.

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Both assertion and reason are correct but reason is not the correct explanation for assertion.

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Assertion is correct but reason is incorrect.

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Assertion is incorrect but reason is correct.

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Solution

The correct option is A Both assertion and reason are correct and reason is the correct explanation for assertion.
Reproductive isolation refers to the situation where different species may live in the same area, but properties of individuals prevent them from interbreeding. The things which stop species or groups of organisms reproducing sexually are called as isolating mechanisms.

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Q. Assertion :The establishment of reproductive isolation is an event of biological significance. Reason: In the absence of reproductive isolation, species can merge back into single population.

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Q. Assertion
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Assertion (A) Order of the reaction can be zero or fractional.

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(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

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