this a normal D.N.A strand: (A-C-T-G-G-A-T)
what is an insertion?
A. A-C-T-G-C-G-A-T
B. A-T-G-A-T
C. A-G-T-G-G-A-T
D. A-C-T-G-G-A-U
PLS HELP ME IT IS URGENT