Question

In a monohybrid cross a round wrinkled seeded plant. in f2 generation genotype ratio obtained was 1:2:1. how many plants were heterozygous.


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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.