Dihybrid Crosses

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Multiple Choice

In a dihybrid cross, the F1 generation shows a phenotypic ratio of 9:3:3:1. What is the genotype ratio of the F2 generation?

  1. 9:3:3:1
  2. 1:2:1:2
  3. 3:1:1:3
  4. 1:1:1:1
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