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Q.

Self-pollination between Tt plant results into the genotype ratio of

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a

3 : 1

b

1 : 2 : 1

c

1 : 3

d

4 : 0

answer is B.

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Detailed Solution

In the self pollination between Tt and Tt  plants, from the Punnett square it is easily seen that 1/4th of the random fertilisations lead to TT, 2/4 lead to Tt and 1/4th to tt. Therefore, it gives the genotypic ratio 1:2:1.

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