| Date | May 2012 | Marks available | 1 | Reference code | 12M.1.HL.TZ2.34 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Outline | Question number | 34 | Adapted from | N/A |
Question
What causes genetic variety in the formation of gametes during meiosis?
A. Crossing over in prophase I and random orientation of homologous chromosomes in metaphase I
B. Crossing over in metaphase I and random orientation of homologous chromosomes in metaphase II
C. Linkage of genes in prophase I and crossing over in metaphase I
D. Linkage of genes in metaphase I and random orientation of homologous chromosomes in metaphase II
Markscheme
A
Examiners report
N/A
