It inhibits viral protein synthesis b. The chronic phase is characterized by only atrophy. Later on, the boy with DMD will push his hands against his knees to rise to a standing position, to compensate for leg weakness. It is characterized by delay in the ability to relax muscles after forceful contraction myotonia and wasting of muscles, as well as other abnormalities. In the case of DM, one copy of each gene is inherited from each parent. Cervical vertebrae malformation Cleft palate Median fissures due to non-closure of bones.