If Darwin's theory of pangenesis shows similarity with theory of inheritance of acquired characters, then what shall be correct according to it?

Useful organs become strong and developed, while useless organs become extinct. These organs help in the struggle for survival

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Size of organs increase with ageing

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Development of organs is due to willpower

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There should be some physical basis of inheritance

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Solution

The correct option is D There should be some physical basis of inheritance
According to Darwin's theory of pangenesis, acquired characters are passed from parent to offspring. This causes development of specific characters in an individual. According to the theory of inheritance, characters acquired by an individual during its lifetime is preserved over generations and transmitted to offsprings in the form of pangenes. Hence, according to both theories, there are some physical basis of inheritance in which acquired characters are inherited.
Thus, the correct answer is option D.

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Reason: The principle of inheritance of acquired characters.

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But inheritance of acquired characters is not valid.

So how do we clarify that the long neck of giraffe has passed on to its progeny?

Define inheritance. What is what is the basis of heredity. who proposed law of inheritance in living organisms

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