Organic evolution would not have taken place:

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(A) Organic evolution is driven by the accumulation of heritable genetic variations within a population over generations. Natural selection acts upon

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If individuals in a population did not show genetic variations

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(A) Organic evolution is driven by the accumulation of heritable genetic variations within a population over generations. Natural selection acts upon these variations,leading to changes in allele frequencies. If individuals in a population did not show genetic variations,there would be no raw material for natural selection to act upon. Without genetic variation,the population would remain static,and no evolutionary change could occur. Therefore,the absence of genetic variation is the primary factor that would prevent organic evolution.

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