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Principles Of Inheritance And Variation

Question

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A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the F₁ plants were selfed the resulting genotypes were in ratio of

1:2:1 :: Tall heterozygous: Tall homozygous: Dwarf

3:1:: Tall: Dwarf

3:1:: Dwarf: Tall

1:2:1 :: Tall homozygous : Tall heterozygous: Dwarf

Solution

D.

1:2:1 :: Tall homozygous : Tall heterozygous: Dwarf

Parents TT (Pure Tall) * tt (Dwarf)
F₁ generation
Tt ( hetrozygous tall)
Tt * Tt (selfed)

	T	t
T	TT	Tt
t	Tt	tt

TT - Homozygous tall = 1
Tt - Heterozygous tall = 2
tt - Dwarf = 1
Ratio is 1:2:1

Some More Questions From Principles of Inheritance and Variation Chapter

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