The effects of a mutation are different depending on the type of cell that is affected.
* If a mutation occurs in a somatic cell (all cells except the reproductive cells), this can trigger the development of a cancer (colorectal cancer, retinoblastoma...).
* If a germ cell (reproductive, giving gametes) is affected, the person will not be affected but his descendants will be affected. (this gives genetic, hereditary disease, like sickle cell anemia, haemophilia...).
