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6. How would you identify, on a karyotype, a sufferer of regular trisomy 21 Down's Syndrome?

  • Extra chromosome 21
  • Abnormal chromosome 21
  • Absent chromosome 21

7. What is a viable treatment for Klinefelter's Syndrome?

  • Oestrogen treatment
  • Testosterone treatment
  • Growth hormone
  • Full time care

8. In Down's Syndrome, what percentage of cases are mosaic?

  • 92
  • 24
  • 94
  • 2
  • 4

9. Which of the following is a symptom of Turner's Syndrome?

  • Taller than average height
  • Rudimentary ovaries
  • Testicular atrophy
  • Small penis
  • Gynecomastia

10. When karyotyping, what is adedd to the cells at the start of metaphase, and why?

  • Dye, to make the chromosomes visible.
  • A solution of high water potential, to burst the cell.
  • Colchinine, to inhibit spindle formation.
  • Sulphuric acid, to dissolve the nuclear membrane.