Many human diseases have a genetic component and some of the diseases can be very rare so researchers have to undergo intense investigations. Genetic disorders can affect anyone, but that is only if the parents carry the certain trait which they can pass on to their children. Most genetic disorders do not have cures but do have treatments that can help, they are caused by a mutation in one gene, by mutations in multiple genes, by a combination of gene mutations, environmental factors, or by damage to chromosomes. People who are worried that they might carry certain variant genes can have genetic testing done so they can learn their children’s chances of inheriting a disease. Pregnant women can also do genetic testing to find out if their fetus
