Genetics Quiz#26 Muscular Dystrophies

1. A 5-year-old boy is brought to the physician by his parents because of difficulty running and jumping compared to his peers. On examination, the physician notes calf pseudohypertrophy and a positive Gower sign. Which of the following is the most likely diagnosis?

Question 1 of 5

2. Which of the following genetic mechanisms is most commonly responsible for Becker Muscular Dystrophy? 

Question 2 of 5

3. A 25-year-old man comes to the clinic because of difficulty releasing his grip after handshakes and stiffness in his jaw after laughing. He also mentions that his mother had similar symptoms. Which of the following is the most likely diagnosis? 

Question 3 of 5

4. Which of the following is NOT a feature of Duchenne Muscular Dystrophy (DMD)? 

Question 4 of 5

5. A 17-year-old male is diagnosed with a form of muscular dystrophy that is less severe than his older brother, who was wheelchair-bound by the age of 12. Genetic testing reveals a mutation in the dystrophin gene that allows for the production of a partially functional protein. Which of the following best describes his condition? 

Question 5 of 5


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