| Date | May 2010 | Marks available | 1 | Reference code | 10M.1.SL.TZ1.13 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Identify | Question number | 13 | Adapted from | N/A |
Question
In some people, hemoglobin always contains the amino acid valine in place of a glutamic acid at one position in the protein. What is the cause of this?
A. An error in transcription of the hemoglobin gene
B. An error in translation of the mRNA
C. Lack of glutamic acid in the diet
D. A base substitution in the hemoglobin gene
Markscheme
D
Examiners report
N/A
