Assertion : Human ancestors never used their | vedclass

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(D) The Assertion is incorrect because the tail-expressing genes have not completely disappeared; humans possess vestigial structures like the coccyx

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If both the Assertion and Reason are incorrect.

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(D) The Assertion is incorrect because the tail-expressing genes have not completely disappeared; humans possess vestigial structures like the coccyx (tailbone),which are remnants of ancestral tails. Furthermore,genes are not lost simply due to disuse.The Reason is incorrect because Lamarck's theory is known as the 'Theory of Inheritance of Acquired Characters'. The 'Theory of Continuity of Germ Plasm' was proposed by August Weismann,which specifically refuted Lamarckism by stating that changes in somatic cells are not inherited.

Assertion : Human ancestors never used their tails and so the tail expressing gene has disappeared in them.
Reason : Lamarck's theory of evolution is popularly called theory of continuity of germ plasm.

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Assertion : Human ancestors never used their tails and so the tail expressing gene has disappeared in them.Reason : Lamarck's theory of evolution is popularly called theory of continuity of germ plasm.