Question

A mutation that causes changes in the amino acid sequence downstream of the mutation is called

a point mutation
a translocation mutation
a substitution mutation
a frameshift mutation** I think its this one

Answer 1

This might help:
http://ghr.nlm.nih.gov/handbook/mutationsanddisorders/possiblemutations

Answer 2

point mutation

Answer 3

It was frameshift

Answer 4

That's what you thought, well done you!