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Question: 1 / 400

What type of mutation occurs when a base pair is replaced with another?

Gene rearrangement

Deletion

Point mutation

A gene rearrangement involves changes in the order or structure of genes within the genome, rather than substitutions of individual base pairs.

A deletion occurs when a segment of DNA is lost or removed, rather than just a single base pair substitution.

An inversion involves a reversal of the order of a segment of DNA, rather than just a single base pair substitution.

The correct answer is C because a point mutation refers specifically to a single base pair substitution, where one nucleotide is replaced with another. This type of mutation can result in a change in the genetic code of an organism, potentially altering the function of a protein or gene.

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Inversion

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