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What is the genotype ration between the cross YyRr x YyRr?


YYRR:2YYRr:2Yyrr:4YyRr:YYrr:2YyRR:yyRR:yyRr:yyrr

2YYRR:2YYRr:2Yyrr:4YyRr:YYrr:2YyRR:yyRR:yyRr:yyrr

YYRR:2YYRr:2Yyrr:4YyRr:YYrr:2YyRR:yyRR:yyRr:2yyrr

YYRR:2YYRr:2Yyrr:4YyRr:YYrr:2YyRR:yyRR:2yyRr:yyrr

Verified Answer :

Kittykat1199

Pretty sure this is how to work it. Hope this helps!

View image Kittykat1199

Answer:

Option D

1 YYRR: 2 YYRr: 2 Yyrr: 4 YyRr : 1 YYrr : 2 YyRR : 1 yyRR : 2 yyRr: 1 yyrr

Explanation:

The genotype of the cross between dihybrid cross will be as follows

YR

Yr

yR

yr

So the punnet square for this cross will be as follows -

  YR          Yr           yR          yr

YR YYRR YYRr YyRR YrRr

Yr YYRr YYrr         YyRr Yyrr

yR YyRR YyRr yyRR yyRr

yr YyRr Yyrr         yyRr yyrr

The genotypic ratio is as follows -

1 YYRR: 2 YYRr: 2 Yyrr: 4 YyRr : 1 YYrr : 2 YyRR : 1 yyRR : 2 yyRr: 1 yyrr


Hence,option D is the correct answer

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