Biology for IGCSE & O level - Variation And Selection (Section 4 - No. 7)
What is the primary role of mutation in natural selection?
To directly cause all members of a population to change their traits.
To provide the raw material (genetic variation) for natural selection to act upon.
To eliminate harmful traits from a population.
To ensure that all individuals in a population are identical.
Explanation
Mutations introduce genetic variation within a population, allowing for different traits that can be selected for or against by environmental pressures.
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