| Date | May 2009 | Marks available | 1 | Reference code | 09M.1.HL.TZ2.23 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 23 | Adapted from | N/A |
Question
Which of the following conclusions did Mendel make from his experiments?
A. Dominant genes are more frequent than recessive genes.
B. Genes are composed of DNA.
C. Traits are inherited in discrete units, one from each parent.
D. Segregation occurs through meiosis.
Markscheme
C
Examiners report
This question was deemed to be unfair, as it tested information required by the previous syllabus and was therefore discounted.
