Question

In f2 generation of a dihybrid cross ratio of parental and recombinant phenotypic ratio combinations is

Answer 1

In f2 generation of a dihybrid cross ratio of parental and recombinant phenotypic ratio combinations is 1:2::2:1.

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Answer 2

In f2 generation of a dihybrid cross ratio of parental and recombinant phenotypic ratio combinations is 12: 4

Explanation:

• Consider a cross between, Yellow Round (YYRR) and green wrinkled (yyrr) traits of the pea plant.
• The F1 generation of this cross produces Yellow Round offspring.
• When the F1 generation phenotype is self crossed it leads to the formation of two different phenotypic characters namely parental and non-parental.
• The F2 generation produces 16 offspring out of which 12 are parental phenotype (9 Yellow Round, and 3 Wrinkled green), and 4 are recombinant or non-parental (3 yellow wrinkled and 1 green wrinkled).
• The below given image shows the punnet square of the dihybrid cross explaining the phenotypic ratio of parental as well as recombinant species.