A dihybrid ratio is____________________?
Correct answer: B. 9:3:3:1
- A. 1:1:1:1
- B. 9:3:3:1
- C. 3:1
- D. 27:9:9:3:3:3:1
Explanation
A typical Mendelian dihybrid cross involving two independently assorting genes gives the F2 phenotypic ratio 9:3:3:1. The 3:1 ratio belongs to a monohybrid cross, while 1:1:1:1 is typical of a dihybrid test cross.
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