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USMLE · Question #28

Down syndrome is directly linked to a genetic abnormality of chromosome?

The correct answer is B. XXI. See the full explanation below for the reasoning.

Question

Down syndrome is directly linked to a genetic abnormality of chromosome?

Options

  • AXXII
  • BXXI
  • CXIIX
  • DXV

How the community answered

(44 responses)
  • A
    2% (1)
  • B
    82% (36)
  • C
    5% (2)
  • D
    11% (5)

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