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NBME USMLE Step 1 VIP Practice Exam
NBME — The USMLE Step 1, administered by the National Board of Medical Examiners (NBME) and FSMB, consists of 280 questions in 7 one-hour blocks covering basic medical sciences in clinical vignette format; as of January 2022 it is scored Pass/Fail.
29
Questions
60m
Time Limit
60.00%
To Pass
Question 1 of 29👑 VIP
A 4-year-old boy is brought to the clinic because his parents have noticed he bruises easily and has prolonged bleeding after minor cuts. Laboratory studies show normal platelet count, normal PT, and prolonged aPTT. Factor VIII activity is markedly reduced. His maternal uncle died of a similar bleeding disorder. Which of the following best describes the inheritance pattern of this condition?
Questions 2–29 and full explanations are VIP-exclusive.