Q.

What is the ratio of RRYY, rrYY, RrYy and RrYY in F2 progeny of Mendel’s dihybrid ratio?

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a

2 : 4 : 1 : 1

b

1 : 1 : 2 : 1        

c

1 : 1 : 4 : 2

d

1 : 1 : 1 : 1

answer is B.

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Detailed Solution

The ratio of RRYY (round and yellow), rrYY (wrinkled and yellow) , RrYy (round and yellow) and RrYY (round and yellow) in F2 progeny of Mendel’s dihybrid ratio is 1 : 1 : 4 : 2.

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