Biologymedium · Past Paper
What is the phenotypic ratio of a dihybrid cross in the F2 generation?
A3:1
B1:2:1
C9:3:3:1
D1:1:1:1
✓ Correct Answer: C — 9:3:3:1
The classic Mendelian ratio for a dihybrid cross is 9 (both dominant) : 3 (one dominant) : 3 (other dominant) : 1 (both recessive).
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