Hypokinetic movements include: 1  Bradykinesia. 2  Freezing. 3  Rigidity. 4  Postural instability.
Mutations cause changes in the genetic code that lead to genetic variation and the potential to develop disease. Gene mutations can be generally categorized into two types: point mutations and base-pair insertions or deletions. Point mutations are the most common type of gene mutation. Also called a base-pair substitution, this type of mutation changes a single nucleotide base pair.
Two types of gene mutations are chromosomal and point mutation.  Chromosomal mutation alters a cell's chromosomes, while point  mutation replaces single-base pair nucleotideâ¦s with other  nucleotides found in RNA or DNA.