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Dihybrid cross between two traits in Mendel's experiments resulted in the ratio of:
Question

Dihybrid cross between two traits in Mendel's experiments resulted in the ratio of:

A.

9:4:2:1

B.

​9:3:3:1

C.

​1:3:9:3

D.

​9:1:3:3

Correct option is B

The correct answer is: (B) 9:3:3:1

Explanation:
A Dihybrid Cross involves two different traits being inherited together. In Mendel’s experiment, he crossed pea plants that differed in two traits (e.g., seed shape and seed color). The F₂ generation resulted in a 9:3:3:1 ratio, following Mendel’s Law of Independent Assortment, which states that genes for different traits are inherited independently of each other.
Information Booster:
  • Example of Dihybrid Cross (Mendel’s Pea Plants):
    • Round Yellow (RRYY) × Wrinkled Green (rryy)
    • F1 Generation: All Round Yellow (RrYy)
    • F2 Generation Phenotypic Ratio:
      • 9 Round Yellow
      • 3 Round Green
      • 3 Wrinkled Yellow
      • 1 Wrinkled Green
Final Ratio:9:3:3:1

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