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Individual 1 with phenotype T for tall is test-crossed, and half of the offspring produced have...

Individual 1 with phenotype T for tall is test-crossed, and half of the offspring produced have phenotype T and half have phenotype t. What are the genotypes of the individuals that were crossed?

A) TT and tt

B) Tt and tt

C) Tt and Tt

D) TT and Tt

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Answer #1

Test cross is always done with recessive genotype.

So one genotype would be tt

Now from punnet square-

nett It It Tt - Tall 50% ttttttt short 50% so genotype is It and tt.option B is correct

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