Question

What is the F_¹ generation in a Dihybrid cross?

Answer 1

Dihybrid cross:

1. A Dihybrid cross is a cross between two different organisms where both the parents are heterozygous for two traits, which means they have both dominant and recessive alleles for each trait.
2. F₁ generation means Filial 1 generation, which is the resulting offspring from a cross between two different types.
3. In the case of dihybrid cross of the pea plant, when parents with the homozygous condition of genotype RRYY (round yellow) and rryy (wrinkled green) are crossed,
4. In the F1 generation, all the heterozygous round and yellow plants with genotype RrYy.
5. R- Round and Y-Yellow are dominant traits for Pea plant seed shape and color, whereas r- wrinkled and y-green are recessive traits for Pea plant seed shape and color.
6. Whether it's homozygous or heterozygous, always dominant trait will be expressed.