Answer
Mutation -Sudden change occuring in DNA is known as mutation.
The type of mutation shown in the provided DNA sequences is a Substitution mutation. In this case, individual nucleotides have been replaced with different ones (e.g., T to A, G to C, A to T, etc.), resulting in a change in the genetic code.
A- adenine
T- thymine
G- guanin
C- cytosine