Answer:
When cells are mutated, a permanent variation happens in the DNA sequence of the cell that can disrupt its normal development or cause medical condition like genetic disorders, cancers etc.
Explanation:
A cell mutation occurs when a permanent variation happens in the DNA sequence of the cell, which makes up the gene. It can occur during the DNA replication phase in the cell division process or as a result of external factors such as radiation, inflammation, free radicals etc.
The genes help in the production of proteins that have an important role in the various functions of the body. Mutations can result in the absence of some proteins in the body or cause the proteins to malfunction. Thus it can disrupt normal development or cause medical condition like genetic disorders, cancers etc.