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.

Column-$I$	Column-$II$
$(1)$ Human embryos have gill	$(a)$ Chemical evolution
$(2)$ Oparin and Haldane	$(b)$ Simulation experiment
$(3)$ Miller and Urey	$(c)$ Wings of bird and butterfly
$(4)$ Analogous organ	$(d)$ Ontogeny repeats phylogeny

List-$I$	List-$II$
$(a)$ Oparin and Haldane	$(i)$ Analogy
$(b)$ Haeckel	$(ii)$ Simulation of primitive Earth conditions
$(c)$ Miller	$(iii)$ Chemical evolution
$(d)$ Wings of bird and butterfly	$(iv)$ Embryological support for evolution

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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Identify the animal shown in the figure.

Two morphologically similar populations are intersterile. They belong to

Match the columns:

Column-$I$ Column-$II$

$(1)$ Human embryos have gill $(a)$ Chemical evolution

$(2)$ Oparin and Haldane $(b)$ Simulation experiment

$(3)$ Miller and Urey $(c)$ Wings of bird and butterfly

$(4)$ Analogous organ $(d)$ Ontogeny repeats phylogeny

Match the following columns:
List-$I$ List-$II$
$(a)$ Oparin and Haldane $(i)$ Analogy
$(b)$ Haeckel $(ii)$ Simulation of primitive Earth conditions
$(c)$ Miller $(iii)$ Chemical evolution
$(d)$ Wings of bird and butterfly $(iv)$ Embryological support for evolution

Following are avian characters found in $Archaeopteryx$ $lithographica$,$EXCEPT$ . . . . . . .

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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.