TT Pea plant is crossed to tt plant. $F_{2}$ generation will have

All tall plants

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Tall and dwarf in the ratio of 3 : 1

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Tall and dwarf in the ratio of 1 : 2

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Tall and dwarf in the ratio of 1 : 1.

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Solution

The correct option is B Tall and dwarf in the ratio of 3 : 1

Crossing of homozygous tall TT with a homozygous dwarf (tt), is called Monohybrid cross. In this, all F₁ progeny are heterozygous tall(Tt). In the F₂generation, 1 homozygous tall(TT), 2 heterozygous tall(Tt), homozygous dwarf(tt), genotypically. Phenotypically, 3 tall and 1 dwarf plants are present.
So, the correct option is ‘Tall and dwarf in the ratio of 3:1’.

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What is the genotypic ratio of plants in F₂ generation when a tall pea plant (TT) is crossed with a dwarf pea plant (tt)?

F_{1}

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F_{1}

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F_{1}

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