On crossing of homozygous dominant and homozygous recessive parents which of the following might appear in an $F_{2}$ generation, but not in an $F_{1}$ generation?

Heterozygous genotype

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Dominant phenotype

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Recessive phenotype

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A and B

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B and C

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Solution

The correct option is D Recessive phenotype
F $_{2}$ cross T t
T TT Tt
t Tt tt
Example: Tall pea plants (TT) and dwarf pea plants (tt)
On crossing homozygous dominant and homozygous recessive parents, the f $_{1}$ generation produced was Tt i.e. all tall plants.
But on self-crossing the F $_{1}$ plants, the plants produced are shown in the table above.So, its clearly seen that in F $_{2}$ , the recessive phenotype is seen, which was absent in $F_{1}$
So, the correct answer is 'Recessive phenotype'

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On crossing of homozygous dominant and homozygous recessive parents which of the following might appear in an F2 generation, but not in an F1 generation?

On crossing of homozygous dominant and homozygous recessive parents which of the following might appear in an $F_{2}$ generation, but not in an $F_{1}$ generation?