Biology · Genetic Disorders
Consider the following statements regarding Duchenne Muscular Dystrophy (DMD): I. It is caused due to defective production of dystrophin, a protein that stabilizes muscle fibers. II. The disorder follows an X-linked recessive pattern of inheritance and primarily affects males. III. The condition was extensively described in the 19th century by the French neurologist Guillaume Duchenne. IV. The initial symptoms usually affect proximal muscles before progressing to distal muscles. Which of the statements given above are correct?
- 1I, II, III, and IV
- 2II and IV only
- 3I, III, and IV only✓
- 4I, II, and III only
Correct answer
I, III, and IV only
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