Molecular Biology/Genetics USMLE Step 1 Practice Question
A 5-year-old, intellectually impaired male is brought to the city from a rural community for evaluation. A careful history reveals intellectual impairment in a number of other family members, especially the males. Physical examination is remarkable for a long face with large ears, a large jaw, and bilateral enlargement of the testes. This presentation is most suggestive of which of the following in this patient?
Answer choices
- ADown syndrome
- BEdwards syndrome
- CKlinefelter syndrome
- DTurner syndrome
- EFragile X syndromeCorrect answer
- FWilliams syndrome
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