While ALS is the most common motor neuron disease, we also treat all other forms, including: 1  PLS (Primary Lateral Sclerosis), affecting the upper motor neurons in the brain and spinal cord. 2  PMA (Primary Muscular Atrophy), affecting the lower motor neurons from the spine to the muscle.
Deletion Mutation and DNA. A deletion mutation occurs when part of a DNA molecule is not copied during DNA replication. This uncopied part can be as small as a single nucleotide or as much as an entire chromosome.The loss of this DNA during replication can lead to a genetic disease.eletion Mutation and DNA. A deletion mutation occurs when part of a DNA molecule is not copied during DNA replication. This uncopied part can be as small as a single nucleotide or as much as an entire chromosome.
Deletion. (Science: genetics) a chromosome abnormality in which part of a single chromosome has been lost. Please contribute to this project, if you have more information about this term feel free to edit this page. This page was last modified on 3 October 2005, at 21:16.This page has been accessed 49,284 times. What links here | Related changes | Permanent link.