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Question

A monohybrid cross between heterozygote F1 progeny and its homozygous recessive parent was done. Assuming it to be a mendelian cross, What will be the ratio of different phenotypes in F2 generation?


A

1:2:1

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B

1:1

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C

All same phenotype

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D

1:3

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Solution

The correct option is B

1:1


This is a case of test cross (when heterozygote of F1 generation is crossed with homozygous recessive parent). In mendelian genetics the phenotypic ratio for monohybrid test cross is always 1:1


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