Question

In a cross between two pea plants considering a single trait, both the traits were obtained in 1:1 ratio. What was the genotype of the parents crossed? Show the cross to support your answer ​

Answer 1

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Answer 2

Explanation:

Mendel crossed pure tall plant(TT) with a pure dwarf plant(tt). In the F1 generation, tall plants are formed(Tt). When F1 plant is subjected to self pollination, in the F2 generation, 3 tall plants and 1 dwarf plants are formed. In the one homozygous tall plant (TT), 2 heterozygous tall plants(Tt), one homozygous dwarf plant(tt) are formed. Phenotypic ratio is 3:1, genotypic ratio is 1:2:1.

So, the correct option is ‘1:2:1’.

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