What scenerio will give a 9:3:3:1 F2 phenotypic ration in a mendelian cross

Expert Solution

If both parents are heterogeneous for both traits the phenotypic ratio will become 9:3:3:1. Mendel is expressed this one as Law of independent assortment’.

In dihybrid cross,a cross is made between the two parents based on two pairs of contrasting characters.

A cross is made between homozygous round yellow seeds(RRYY) to another homozygous wrinkled green seeds(rryy). In the F1 generation,all plants are heterozygous round yellow(RrYy). When selfing,in the F2 generation,9 plants are Round Yellow,3 plants are Round green,3 plants are Wrinkled yellow, 1 plant is Wrinkled green.This is the Dihybrid phenotypic ratio. On the basis of these findings,Mendel formulated the Principle of Independent Assortment.

gladiator answered 2 years ago

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