Frameshift Mutation: A type of mutation involving the insertion or deletion of a nucleotide in which the number added or deleted is not divisible by three, causing improper grouping during translation and resulting in different amino acids being produced.
Point Mutation: A mutation affecting only one or very few nucleotides in a gene sequence.
Duplication Mutation: A type of mutation where part of the chromosome gets duplicated and thus appears more than once on it.