How does having the gene for Duchenne's muscular Dystrophy actually give you the Symptoms of Duchenne's muscular Dystrophy? (please help, this prompt is in essay format and I can't do it rn cause I've literally been sick for 11 weeks)

It is believed that europa, one of jupiter’s moons has an ocean beneath its surface. based on how earth’s oceans and atmosphere are believed to have formed, what can be said about europa’s supposed ocean? the arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced , similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s .