Genetics Quiz#27 X linked diseases

1. Which of the following is the most common cause of inherited intellectual disability and is characterized by a CGG trinucleotide repeat expansion? 

Question 1 of 5

2. A 30-year-old man presents with worsening chorea and behavioral disturbances. His father had similar symptoms that started in his mid-30s. Which of the following genetic mechanisms is responsible for his condition? 

Question 2 of 5

3. A 5-year-old boy is brought to the clinic due to a delay in speech and language development. Upon examination, macroorchidism, a long face, and large ears are noted. Which of the following is the most likely diagnosis? 

Question 3 of 5

4. A patient presents with muscle wasting, cataracts, and difficulty relaxing muscles after contraction. Genetic testing shows an abnormality on chromosome 19. Which of the following is the most likely diagnosis?

Question 4 of 5

5. A 20-year-old man presents with gait ataxia, diabetes mellitus, and hypertrophic cardiomyopathy. A genetic test reveals a GAA trinucleotide repeat expansion in a gene encoding a mitochondrial protein. Which of the following is the most likely diagnosis? 

Question 5 of 5


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