| Date | May 2011 | Marks available | 1 | Reference code | 11M.1.SL.TZ1.15 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 15 | Adapted from | N/A |
Question
What happens in crossing over?
A. Exchange of genetic material between homologous chromosomes
B. Exchange of genes during metaphase of mitosis
C. Random distribution of chromosomes during meiosis
D. Homologous chromosomes fail to separate during meiosis
Markscheme
A
Examiners report
N/A
