Let Y = Yellow and Y = Green,and R =

question 35

Multiple Choice

Let Y = yellow and y = green,and R = round and r = wrinkled.You cross YYRR peas with yyrr peas.All of the F₁ individuals are yellow and round with a genotype of YyRr.You then perform a F₂ cross and get the expected 9:3:3:1 phenotypic ratio.Which of the following is the correct genotypic ratio for yellow,round F₂ individuals?

• A)1/16 YYRr,2/16 YYRR,2/16 YyRR,4/16 YyRr
• B)1/16 YyRr,2/16 YYRr,2/16 YyRR,4/16 YYRR
• C)1/16 YYRR,1/16 YYRr,1/16 YyRR
• D)1/16 YYRR,2/16 YYRr,2/16 YyRR,4/16 YyRr

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