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

1. Useful organs become strong and developed while useless organs become extinct. These organs help in struggle for survival
2. Size of organs increase with ageing
3. Development of organs is due to will power
4. There should be some physical basis of inheritance

Correct answer: There should be some physical basis of inheritance

Solution

Darwin’s pangenesis proposed tiny hereditary particles (gemmules) from body parts that could be transmitted to offspring. So, like inheritance of acquired characters, it implies a physical mechanism for heredity rather than just a vague influence.

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