Types of mutations

I. point mutations :

changes in a singe base pair

2. chromosomal mutations

changes in chromosome structure

a. inversion

the order of genes on a chromosome is inverted

b. translocation

the movement of a chromosome fragment to a nonhomologus chromosome

c. deletion

the lost of a few bases or large regions of a chromosome

d. duplication

the duplication of a few bases or large regions of a chromosome