| Date | November 2016 | Marks available | 1 | Reference code | 16N.1.HL.TZ0.35 |
| Level | Higher level | Paper | Paper 1 | Time zone | TZ0 |
| Command term | Determine | Question number | 35 | Adapted from | N/A |
Question
Some of the ratios that Morgan investigated in genetic crosses did not correspond with expected Mendelian ratios. What was the cause?
A. The genetic crosses used insects rather than plants.
B. The results were counted more reliably than Mendel’s.
C. The genes in the genetic crosses were linked.
D. Drosophila has more genes than plants.
Markscheme
C
Examiners report
[N/A]
