Genetic disorder is the result of an abnormality in an individual’s DNA. Abnormalities can take place in the form of a single-base mutation in a gene or it may involve the addition or deletion of part of chromosomes.The mutations may get passed onto the successive generations. Genetic disorders might also occur by the combination of environmental factors and gene mutations.
Individuals may inherit particular mutated disease-causing gene such as the sickle-cell disease, Tay-Sachs disease ,cystic fibrosis and so on. When we are unlocking the secrets of the complete set of human genes, it is being discovered that almost all physiological disorders have connection with a genetic component. Some diseases can be inherited from the parents that are caused by mutations and other diseases might occur during a person’s lifetime due to mutation in gene or group of genes. These diseases may occur randomly because of environmental exposure and those may include cancer and some forms of neurofibromatosis.