| Criteria | Marks |
|---|
| • Explains processes in meiosis that lead to genetic variation | 3 |
| • Explains a process in meiosis that leads to genetic variation OR<br>• Identifies processes in meiosis that lead to genetic variation | 2 |
| • Provides some relevant information | 1 |
Sample answer:
In meiosis, homologous chromosomes are lined up in Metaphase I in random order and orientation (independently assorted). They separate in Meiosis I, resulting in different combinations of parental chromosomes in the gametes. Crossing over is the exchange of genetic material between the chromatids of homologous chromosomes during Meiosis I. This leads to a new combination of alleles on each chromatid.