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  4. A pure tall Pea plant is crossed with pure dwarf Pea plant. The progeny is self-pollinated. The ratio of true breeding tall Pea plants to true breeding dwarf Pea plants shall be

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Q. A pure tall Pea plant is crossed with pure dwarf Pea plant. The progeny is self-pollinated. The ratio of true breeding tall Pea plants to true breeding dwarf Pea plants shall be

Principles of Inheritance and Variation

Solution:

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phenotypic ratio : $\underset{3 \,\,:}{\text{tall}} : \underset{1}{\text{dwarf}}$
Genotypic ratio $: \underset {1\,\,:}{\,\,TT:} \underset{2\,\,:}{\,\,Tt :} \underset{1\,\,}{\,\,tt}$