Assertion :Hybrid breakdown is an example of reproductive isolation. Reason: It increases the biotic potential of a species.

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 C Assertion is correct but Reason is incorrect.
The reproductive characteristics which prevent species from fusing. Isolating mechanisms are particularly important in the biological species concept, in which species of sexual organisms are defined by reproductive isolation, i.e. a lack of gene mixture.
Hybrid breakdown is an example of post mating isolation mechanism which is the sub type of reproductive isolation. Hybrid breakdown is - First generation (F $_{1}$ ) hybrids are viable and fertile, but further hybrid generations (F $_{2}$ and backcrosses) may be inviable or sterile. Hybrid breakdown does not increase the biotic potential of a species. Thus, assertion is correct and reason is wrong. So, option C is correct.

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