| Date | May 2009 | Marks available | 1 | Reference code | 09M.1.SL.TZ2.27 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 27 | Adapted from | N/A |
Question
If an organism that is homozygous recessive for a trait is crossed with a heterozygote, what is the chance of getting a homozygous recessive phenotype in the first generation?
A. 0%
B. 25%
C. 50%
D. 100%
Markscheme
C
Examiners report
N/A
Syllabus sections
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