Biology for IGCSE & O level - Variation And Selection (Section 4 - No. 50)
What is the significance of variation within a population for natural selection to occur?
It creates an opportunity for environmental factors to select against certain traits.
It guarantees that all members of the population have the same traits.
It is not important for natural selection to occur.
It allows all individuals to survive and reproduce equally.
Explanation
Variation provides the raw material upon which natural selection acts.
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