How does a transversion mutation result in a purine being replaced by a pyrimidine or vice versa?

A transversion mutation is a type of genetic change where a purine (adenine or guanine) is replaced by a pyrimidine (cytosine or thymine) or vice versa. This mutation occurs when a single nucleotide base in the DNA sequence is substituted with a different type of base. This change can lead to alterations in the genetic code and potentially impact the function of the gene.