Are Insertions and Deletions Point Mutations?

There are three types of DNA Mutations: base substitutions, deletions and insertions. Single base substitutions are called point mutations, recall the point mutation Glu -----> Val which causes sickle-cell disease. Point mutations are the most common type of mutation and there are two types.

Is deletion a point mutation?

Sometimes the term point mutation is used to describe insertions or deletions of a single base pair (which has more of an adverse effect on the synthesized protein due to the nucleotides' still being read in triplets, but in different frames: a mutation called a frameshift mutation).

What kind of mutation are insertions and deletions?

A frameshift mutation is a particular type of mutation that involves either insertion or deletion of extra bases of DNA.