| Date | May 2018 | Marks available | 1 | Reference code | 18M.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
The cladogram was constructed using DNA base sequences from six species. Which node indicates the greatest difference in base sequences?
[Source: © International Baccalaureate Organization 2018]
Markscheme
A
Examiners report
[N/A]
