| Date | May 2011 | Marks available | 1 | Reference code | 11M.1.SL.TZ1.23 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 23 | Adapted from | N/A |
Question
What is evolution?
A A measure of the relative survival and reproductive success of an individual
B. A cumulative change in the genetically controlled characteristics of a population
C. A physical change during an organism’s life that is inherited by its offspring
D. A random change in the proportions of alleles from generation to generation
Markscheme
B
Examiners report
Comment on the G2 forms suggested that the wording of two of the options was difficult, but the majority of candidates picked the right answer of B, with few going for the other alternatives.
