Answer:
Step-by-step explanation:
Normal DMD gene provides the instructions to make normal dystrophin protein.
® Normal dystrophin in muscle cells ® Normal muscles and normal health
Mutated DMD gene does not provide the instructions to make functional dystrophin.
®
No functional dystrophin in muscle cells
®
Muscle cells break down, so child loses the ability to walk, develops heart problems, and typically dies as a young adult.