During DNA replication, a cytosine (C) base is replaced by a thymine (T) base in a DNA segment. What type of mutation is this?(1 point)
Responses

Inversion
Inversion

Deletion
Deletion

Substitution
Substitution

Insertion

All Answers 1

Answered by GPT-5 mini AI
Substitution

(It's a point mutation where one base is replaced by another — specifically C → T is a transition.)