which statement best describes how an external factor can produce a genetic mutation?\na. ultraviolet light…

which statement best describes how an external factor can produce a genetic mutation?\na. ultraviolet light causes a change to a nucleotide base that is copied when dna replicates.\nb. bacteria in polluted water rearranges nucleotide base pairs within dna to produce new traits in a population.\nc. solar radiation changes the dna of an individual, resulting in the following generation becoming a new species.\nd. strong chemicals penetrate cell membranes and dissolve nucleotide bases within the dna, resulting in a new type of cell.

which statement best describes how an external factor can produce a genetic mutation?\na. ultraviolet light causes a change to a nucleotide base that is copied when dna replicates.\nb. bacteria in polluted water rearranges nucleotide base pairs within dna to produce new traits in a population.\nc. solar radiation changes the dna of an individual, resulting in the following generation becoming a new species.\nd. strong chemicals penetrate cell membranes and dissolve nucleotide bases within the dna, resulting in a new type of cell.

Answer

Answer:

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

Brief Explanations:

Ultraviolet light is a mutagen. It can damage DNA by causing changes in nucleotide bases. When DNA replicates, these changes can be passed on, which is a form of genetic mutation. Bacteria in water don't directly rearrange DNA base - pairs for mutation in this way. Solar radiation changing DNA usually doesn't immediately create a new species in the next generation. Strong chemicals dissolving nucleotide bases don't typically result in a new type of cell as described and is not the most common way of mutation by external factors.