3. It is caused by a mutation in the dystrophin gene
Genes provide the necessary information for our body to produce the necessary proteins to work properly. The protein dystrophin is needed for proper muscular formation and structure. In muscular dystrophy, the dystrophin gene that is responsible for giving instructions for the production of a protein called dystrophin is altered. As a result, the making of dystrophin is disrupted leading to an impaired muscular formation, progressive damage, and death.