Which statement best describes how an external factor can produce a genetic mutation?

A. Ultraviolet light causes a change to a nucleotide base that is copied when DNA replicates.

B. Bacteria in polluted water rearranges nucleotide base pairs within DNA to produce new traits in a population.

C. Solar radiation changes the DNA of an individual, resulting in the following generation becoming a new species.

D. Strong chemicals penetrate cell membranes and dissolve nucleotide bases within the DNA, resulting in a new type of cell.

1 answer

The statement that best describes how an external factor can produce a genetic mutation is:

A. Ultraviolet light causes a change to a nucleotide base that is copied when DNA replicates.

This statement accurately reflects how exposure to external factors, such as ultraviolet light, can cause changes or damage to the DNA, leading to mutations that may be passed on during DNA replication.