CSS :: Organic Evolution Theories
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Which of the following facts does not hold truth with reference to De Vries Theory of organic evolution:
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| [A]. |
New species evolve by sudden and distinct heritable changes called by mutations and not by natural selection | [B]. |
First individual showing is called "mutant'. It is pure breeding as well as transmits mutations to its progeny and thus starts a new species
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| [C]. |
All organisms have tendency to mutate but the rate of mutation varies from time to time depending upon environmental and physiological conditions | [D]. |
The development and deficiency of organs are in proportion to use and disuse of these organs |
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