Mutations generally result in .......

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(A) Mutations are sudden,heritable changes in the $DNA$ sequence. According to the synthetic theory of evolution,mutations are the raw material for ev

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Small changes

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(A) Mutations are sudden,heritable changes in the $DNA$ sequence. According to the synthetic theory of evolution,mutations are the raw material for evolution. While many mutations are neutral or harmful,they generally result in small,incremental changes in the genetic makeup of a population. These small changes,when accumulated over long periods and acted upon by natural selection,lead to significant evolutionary shifts. Therefore,mutations are typically associated with small changes in the phenotype or genotype.

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Assertion $(A)$: Mutation results in changes in genotype and phenotype of an organism.
Reason $(R)$: Mutation leads to alteration of $\text{DNA}$ sequences,i.e.,variations in $\text{DNA}$.
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