Question

The ratio of the monohybrid cross for tall:dwarf in the ${\text{F}}_2$ generation is _____.

• A. 1:3
• B. 2:3
• C. 3:2
• D. 3:1

Answer 1

The correct option is D 3:1

A monohybrid cross is a breeding experiment in which two individuals of the same species that differ in a single trait are cross bred.
In a cross between homozygous tall and dwarf plants, the ${\text{F}}_1$ generation plants obtained are all heterozygous tall (Tt). When these plants are crossed with each other, the ratio obtained is 3:1, with three-fourths of the plants being tall (TT and Tt) and one-fourth dwarf plants (tt).