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 me it is urgent