1. Tardigrade
  2. Question
  3. Biology
  4. The genotypes of a plant variety were TtHh,Tthh,ttHh and tthh , where T = tallness and H = hairy stem. Which one of the following crosses would produce progeny giving a phenotypic ratio approximately 1:1:1:1 ?

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Q. The genotypes of a plant variety were $TtHh,Tthh,ttHh$ and $tthh$ , where T = tallness and H = hairy stem. Which one of the following crosses would produce progeny giving a phenotypic ratio approximately $1:1:1:1$ ?

NTA AbhyasNTA Abhyas 2022

Solution:

This is a dihybrid test cross between the heterozygous parental dominant type with the recessive trait that produces the ratio of $1:1:1:1.$
Dihybrid cross is a cross between two different lines/genes that differ in two observed traits.