KROK 1 2009 – Question 53 · KROK (Medicine) · Biology

Medical examination at the military registration and enlistment office revealed that a 15-year-old boy was high, with eunuchoid body proportions, gynecomastia, female pattern of pubic hair distribution. The boy had also fat deposits on the thighs, no facial hair, high voice, subnormal intelligence quotient. Which karyotype corresponds with this disease?

  1. A. 45, XO
  2. B. 47, XXX
  3. C. 46, XX
  4. D. 46, XY
  5. E. 47, XXY
Hint

Put the tall eunuchoid build, gynaecomastia and absent facial hair together and ask which sex-chromosome constitution gives a hypogonadal male phenotype.

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