Assertion :Lamarck's inheritance of acquired characteristics always applicable according to modern neo-Lamarkism. Reason: Loss of limbs in snakes is an example of inheritance of acquired characters.

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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Both Assertion and Reason are incorrect.

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Solution

The correct option is D Both Assertion and Reason are incorrect.
Lamarckian inheritance is the idea that an organism can pass on characteristics that it acquired during its lifetime to its offspring. It believes that change in the environment brings about a conscious reaction in animals. According to Lamarckism, the acquired characters are pass on to next generation. Neo-Lamarckism theory stress on the direct effect of changed environment on organisms. According to this theory, normally only those modifications are transferred to next generation which influence germ cells or where somatic cells give rise to germ cells. So, Lamarck's inheritance of acquired characteristics always not applicable according to modern neo-Lamarkism. Loss of limbs in snakes is not an example of inheritance of acquired characters. It is an example of atavism.
Thus, the correct answer is option D.

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