Question

Assertion :Natural selection is the outcome of difference in survival and reproduction among individuals that show variation in one or more traits. Reason: Adaptive forms of a given trait tend to become more common, less adaptive ones become less common or disappear.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
• C. Assertion is correct but Reason is incorrect.
• D. Assertion is incorrect but Reason is correct.

Answer 1

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

Assertion is correct, as natural selection is the outcome of difference in survival and reproduction among individuals that show variation in one or more traits. It is a key mechanism of evolution, the change in heritable traits of a population over time.

Reason is also correct and correct explanation of assertion as adaptive forms of a given trait tend to become more common, less adaptive ones become less common or disappear. The unequal ability of individuals to survive and reproduce will lead to a gradual change in population with favorable characteristics accumulating over the generation, which leads to the formation of new species.

Therefore, the correct answer is option A.