Transition, in genetics and molecular biology, refers to a point mutation that changes a purine nucleotide to another purine (A ↔ G), or a pyrimidine nucleotide to another pyrimidine (C ↔ T).

Although there are twice as many possible transversions, because of the molecular mechanisms by which they are generated, transition mutations occur at higher frequency than transversions.

Transition mutations occur when a pyrimidine base (i.e., thymine [T] or cytosine [C]) substitutes for another pyrimidine base or when a purine base (i.e., adenine [A] or guanine [G]) substitutes for …

Transition mutations involve the substitution of one purine base for another or one pyrimidine base for another, while transversion mutations involve the substitution of a purine base for a pyrimidine base …

Feb 4, 2019 · Transition refers to a point mutation in which one base is replaced by another of the same class (purine or pyrimidine) while transversion refers to a point mutation in which a purine is replaced …

A transition mutation is a type of point mutation where a purine base (adenine or guanine) is replaced by another purine, or a pyrimidine base (cytosine or thymine) is replaced by another pyrimidine.

Transition or transversion mutants may lead to no change in the protein sequence (known as silent mutations), change the amino acid sequence (known as missense mutations), or create what is …