A pure tall plant (TT) is crossed with a pure short plant (tt). The ratio of pure tall plants to pure short plants in $F_{2}$ generation will be

1 : 4

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3 : 1

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1 : 1

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2 : 3

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Solution

The correct option is D 1 : 1
According to the question:
Parent generation TT (pure tall) x tt (pure dwarf)
gametes T t
$F_{1}$ generation Tt (heterozygous tall)
$F_{2}$ generation

Gametes Tt--->
Tt T t
T TT Tt
t Tt tt
$F_{2}$ Genotypic ratio =1 pure tall (TT) : 2 heterozygous tall (Tt) : 1 pure dwarf (tt); thus, the ratio of pure tall to pure short plants will be 1:1.

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A pure tall plant (TT) is crossed with a pure short plant (tt). The ratio of pure tall plants to pure short plants in F2 generation will be

A pure tall plant (TT) is crossed with a pure short plant (tt). The ratio of pure tall plants to pure short plants in $F_{2}$ generation will be