Question

question 5 of 10
what is a point mutation?
a. a change in a single nucleotide
b. a change in the shape of a protein
c. a change in the order of amino acids
d. a change in the order of nucleotides

Explanation:

A point mutation specifically refers to a change in a single nucleotide within a DNA sequence. Options B refers to protein - related changes (not the definition of a point mutation), option C is about amino - acid order (related to translation and not the direct definition of a point mutation), and option D is too broad (a point mutation is a single - nucleotide change, not just any change in nucleotide order).

Answer:

A. A change in a single nucleotide