KROK 1 2011 – Question 195 · KROK (Medicine) · Biology
Cytogenetic examination of a patient with reproductive dysfunction revealed normal karyotype 46 XY in some cells, but most cells have karyotype of Klinefelter’s syndrome - 47 XXY. Such cell heterogenity is called:
- A. Mosaicism
- B. Transposition
- C. Inversion
- D. Monomorphism
- E. Duplication
Hint
Consider whether the finding is a structural rearrangement within a chromosome or a difference in chromosome number between cell populations, and when after fertilisation it could arise.
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.
More questions on Biology
- A patient presents with acne and inflammatory alterations of facial skin. Microscopial investigation of lesion foci has revealed live arthropods…
- A man suffering from a hereditary disease married a healthy woman. They got 5 children, three girls and two boys. All the girls inherited their…
- A couple has a son with haemophilia. The parents are healthy but the maternal grandfather also has haemophilia. Specify the type of inheritance:
- Examination of newborns in one of the Ukrainian cities revealed a baby with phenylketonuria. The baby’s parents don’t suffer from this disease and…
- Patients with similar complaints applied to the doctor: weakness, pain in the intestines, disorder of GIT. Examination of the faeces revealed that…
- A female patient consulted a physician about digestive disorder, extended abdominal pain. Examination revealed drastic decrease in hemoglobin…