Question

which type of mutation is represented in the new gene

1. addition 2. deletion 3. inversion 4. substitution

Answer 1

substitution, because in the second one, the fifth letter is a G while it was a C in the first one.

Answer 2

You have a substitution:
ACGCCCACCTTA
ACGCGCACCTTA

If you line them up across from each other you can see them (I tried to put them in bold). Everything else is the same!