If a yellow body, white-eyed Drosophila is crossed with wild brown body red eyes drosophila. Then what would be the frequency of recombinants in $F_{1}$ generation?

100

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1.3

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98.7

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0

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Solution

The correct option is B $100$
The frequency of recombination in F1 generation is 100% between a wild-type dominant and recessive individual in a dihybrid cross(unless the genes are not linked.)
B-Brown body(wild type)
b-Yellow body
R-Red eyes(wild type)
r-white eyes
BBRR x bbrr
will always result in the recombinant BbRr.
So, the correct option is '100%'.

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