Transition and transverse substitutions are

Question

Quizplus · Accepted Answer

Transition and transverse substitutions refer to specific types of nucleotide substitutions in DNA. Transition substitutions involve the replacement of a purine with another purine (A ↔ G) or a pyrimidine with another pyrimidine (C ↔ T). Transverse substitutions, on the other hand, involve the replacement of a purine with a pyrimidine (A ↔ C/T) or vice versa (G ↔ C/T). Therefore, choice C, which accurately describes both types of substitution, is the best answer. It is worth noting that while chemical and radiation exposure can cause mutations in DNA, transition and transverse substitutions do not exclusively result from these types of external factors.

Transition and Transverse Substitutions Are