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The diagram below is an illustration of a cross between plants A and B of...

Biology
WAEC 2020

The diagram below is an illustration of a cross between plants A and B of the same species. Study it and answer the question below;

 

 

2020 Biology WAEC Objective Past Questions | Kofa Study

 

If the F1 generation are plants with high yield and resistance, the genotype of the F1 generation plants would be 

  • A. YYRR
  • B. YyRr
  • C. yyRr
  • D. yyrr
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Correct Answer: Option B
Explanation
            yR       yR      yR      yR
    Yr          YyRr      YyRr     YyRr

    YyRr
    Yr          YyRr      YyRr     YyRr

    YyRr
    Yr          YyRr      YyRr      YyRr 

     YyRr
    Yr         YyRr      YyRr       YyRr

      YyRr

 

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