Question

Examine the two strands of DNA below . Which kind of mutation occurred?
Original strand: AGC GTA CCC TAC
New strand: AGC GTA ACC TAC

Answer 1

In the original strand, the sequence "CCC" has mutated to "ACC" in the new strand. This is an example of a substitution mutation, where a single nucleotide is replaced by a different nucleotide. Specifically, in this case, a cytosine (C) has been substituted for an adenine (A).