An 11-year-old boy arrives for an echocardiogram. You notice that he is quite tall for his age
An 11-year-old boy arrives for an echocardiogram. You notice that he is quite tall for his age. On general inspection, he has a notable pectus excavatum and long limbs. He shows you a cool trick where he is able to bend his thumb back to touch his wrist. Which of the following chromosomes is likely to be abnormal?
Select the SINGLE most appropriate option from the list below. Select ONE option only.
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