| Date | May 2018 | Marks available | 1 | Reference code | 18M.1.SL.TZ1.21 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 21 | Adapted from | N/A |
Question
What explains the presence in living humans of DNA sections which are identical to DNA found in Neanderthals who lived 40 000 years ago?
A. Genetic mutation
B. Inheritance
C. Adaptation
D. Speciation
Markscheme
B
Examiners report
[N/A]
