IB Biology SL 2.5.10 Codominance and incomplete dominance Question Bank
Practise IB Biology SL 2.5.10 by predicting phenotypes from codominant and incompletely dominant alleles.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Distinguish dominant, recessive, codominant and incompletely dominant inheritance.
- Use inheritance data to predict offspring phenotypes.
D3.2.10—Incomplete dominance and codominance question 1
[Maximum number: 1]
A Mirabilis jalapa plant with red flowers was crossed with one with white flowers. All plants in the F1 generation had pink flowers. What phenotype ratio would be expected in the F2 generation?
A
100 % pink
B
50 % red and 50 % white
C
25 % white, 50 % pink and 25 % red
D
75 % red and 25 % white
C
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