KROK 1 2023 – Question 64 · KROK (Medicine) · Biology

A child has 3 copies of chromosome 18, which resulted in characteristic cranial elongation from front to back, maldevelopments of the musculoskeletal system, fused fingers, and maldevelopments of skeletal muscles. What hereditary pathology is observed in this child?

  1. A. Patau syndrome
  2. B. Down syndrome
  3. C. Edwards syndrome
  4. D. Turner syndrome
  5. E. Klinefelter syndrome
Hint

Three copies of this particular autosome give a recognisable malformation syndrome with a prominent occiput and flexed overlapping fingers; think of the second most common autosomal trisomy in live births.

The answer, the explanation and a note on every option are available once you log in. The account is free: topic tests, a mock exam, mistake review and statistics.

Create a free account Log in

More questions on Biology