| Date | May 2009 | Marks available | 1 | Reference code | 09M.1.HL.TZ2.38 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 38 | Adapted from | N/A |
Question
Questions 38 and 39 refer to the following karyotype.
What procedure(s) could have been involved in the creation of the karyotype?
I. Chorionic villus sampling
II. DNA profiling
III. Amniocentesis
A. I only
B. II only
C. I and III only
D. I, II and III
Markscheme
C
Examiners report
One teacher comment suggested that the term trisomy in the source could have confused the candidates but this did not seem the case, as the questions were answered correctly by most candidates.
