A dihybrid cross between two RrYy plants. R (round) is dominant to r (wrinkled), and Y (yellow) is dominant to y (green).
What phenotypic ratio is expected among the offspring?
- Acheck_circle
9 round-yellow : 3 round-green : 3 wrinkled-yellow : 1 wrinkled-green
- B
1:1:1:1
- C
9 wrinkled-green : 3 round-green : 3 wrinkled-yellow : 1 round-yellow
- D
3:1 round-to-wrinkled only
Explanation
The classic 9:3:3:1 ratio results from independent assortment of two heterozygous gene loci.