| Date | May 2013 | Marks available | 1 | Reference code | 13M.1.HL.TZ1.34 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 34 | Adapted from | N/A |
Question
Human skin colour shows continuous variation. What does this indicate about the pattern of inheritance of human skin colour?
A. It is dominant.
B. It is sex-linked.
C. It is recessive.
D. It is polygenic.
Markscheme
D
Examiners report
N/A
Syllabus sections
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