Multiple choice

When a mutation is limited to the substitution of one nucleotide pair for another, it is called a

  1. point mutation

  2. base inversion

  3. translocation

  4. sugar-phosphate deletion
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A Correct answer
Explanation

A point mutation is a genetic mutation where only a single nucleotide base is changed, inserted, or deleted from a DNA sequence. The substitution of one nucleotide pair for another is the classic definition of a point mutation, as opposed to larger-scale mutations like translocations or deletions.

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