A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the F_1 plants were selfed the resulting genotypes were in the ratio

NEET 2016 Biology question

A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the plants were selfed the resulting genotypes were in the ratio

(1)1 : 2 : 1 :: Tall homozygous : Tall heterozygous : DwarfCorrect
(2)1 : 2 : 1 :: Tall heterozygous : Tall homozygous : Dwarf
(3)3 : 1 :: Tall : Dwarf
(4)3 : 1 :: Dwarf : Tall

Answer: (1)

Solution

Tall true breeding (TT) dwarf true breeding (tt) gives an of all tall heterozygous (Tt). Selfing : Tt Tt gives gametes T and t from each parent, so genotypes are 1 TT : 2 Tt : 1 tt, i.e. 1 tall homozygous : 2 tall heterozygous : 1 dwarf (genotypic

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Question ID VK-091953