Mutations are ........

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(B) Mutations are sudden,heritable changes in the $DNA$ sequence. Most mutations are either neutral or harmful to the organism because they disrupt es

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Rarely useful

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(B) Mutations are sudden,heritable changes in the $DNA$ sequence. Most mutations are either neutral or harmful to the organism because they disrupt established biological functions. However,in rare instances,a mutation can provide a selective advantage,making it beneficial for the organism's survival and evolution. Therefore,mutations are considered rarely useful.

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