Fragile X syndrome Quiz: Ace Your Exams

Get ready to dominate your medical and nursing exams by using our dynamic quizzes to elevate your knowledge and increase your confidence. Whether you're gearing up for the USMLE®, COMLEX®, or your next in-class assessment, Osmosis quizzes tackle key topics in pathology, diagnostics, and treatment approaches. By honing in on clinical readiness and decision-making, we make sure the knowledge you gain empowers you both in the classroom and in real-world practice. Jump in and supercharge your exam prep!

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A 16-month old male infant is brought to the physician by his parents due to concerns about poor growth. The parents tell the physician that he seems to be growing slower than his sister when she was at the same age. At ten months, the patient began sitting unsupported but cannot walk at 16 months. His speech is incoherent. Vaccinations are up to date. Physical examination reveals a well-appearing child in no acute distress. Genetic testing shows increased copies of cytosine-guanine-guanine trinucleotides on the X chromosome. Which of the following clinical findings is expected to develop in this patient as he grows older?  

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