Biology

The correct answer is: A.They render it invalid.

Explanation: Mutations introduce new genetic variations into a population by altering alleles. The Hardy-Weinberg principle assumes that allele frequencies remain constant over generations, which is true only if no new mutations occur. If mutations happen, they can change allele frequencies by creating new alleles or changing existing ones, thus disrupting the equilibrium and rendering the Hardy-Weinberg principle invalid.

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