Mendel's "Second Law" (Fourth Postulate)

• Independent Assortment

• Dihybrid Testcross

  • F1 X recessive parental type
  • Prediction: YyRr X yyrr
    1/2Y X 1/2R = 1/4YR
    
    1/2Y X 1/2r = 1/4Yr
    1/2y X 1/2R = 1//4yR
    1/2y X 1/2r = 1/4yr

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