give me the drwabacks of mutation theory
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i. The large and discontinuous variation
observed by Hugo de Vries were actually
due to chromosomal aberrations were as
gene mutations usually bring about minor
changes.
ii. Rate of mutation is very slow as compared
to the requirement of evolution.
iii. Chromosomal aberrations have little
significance in evolution as they are quite
unstable.
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Explanation:
Mutation theory alone could not explain evolution. It, however, provided raw material for other forces to act upon it and bring about evolutionary changes. 4. Mutation theory cannot satisfactorily explain the development of mimicry, mutual dependence of flowers and pollinating insects
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