Ninety percent of ALS cases in people is "sporadic ALS," which means that the person did not receive the disease from anyone else in their family. The other ten percent affected have cases of "familial ALS" (FALS). FALS is passed down through families. These people may have ALS their entire life, but it will only usually show up in their lives between the ages of forty and sixty. It is rare for ALS to appear in people under the age of twenty. Unlike some other diseases, Gender does not affect the chances of receiving ALS. Males have the same chance of receiving the disease as females do. Amyotrophic Lateral Sclerosis is a unique disease because of the diverse groups of people that it can …show more content…
There are multiple ways that the ALS disease is passed down. FALS is generally autosomal dominant, which gives the affected person's children a fifty percent chance of having the disease if the parent had one normal gene and one mutated gene. ALS may also have an autosomal recessive pattern, which would require both parents to have a single mutated gene in order to pass the disease to the next generation. ALS is rarely passed down by an X-linked dominant pattern. To inherit ALS this way, the offspring ,if it is a female, needs to receive a mutated X chromosome from both parents. If the offspring is a male, only one X chromosome is needed to inherit the disease. FALS shows it's individuality by the many ways it transfers diseases from one generation in a family to the