Which activity involving a segment of DNA does not result in a mutation?
Adenine is added to the sequence.
Thymine and guanine are removed.
mRNA pairs adenine with uracil instead of thymine.
mRNA substitutes guanine for adenine in two locations.
Adenine is added to the sequence.
Thymine and guanine are removed.
mRNA pairs adenine with uracil instead of thymine.
mRNA substitutes guanine for adenine in two locations.