First slide

Inheritance of One Gene

Question

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

Easy

A

3 : 1
B

1 : 2 : 1
C

1 : 3
D

4 : 0

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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