The F2 progeny of a monohybrid cross showed phenotypic and genotypic ratio as 1:2:1 unlike that the Mendel’s monohybrid F2 ratio. With the help of a suitable example, work out a cross and explain how it is possible.
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such a condition in which both the genotypic and phenotypic ratio are same is an example of incomplete dominence .In Snapdragon plants (Antirrhinum) ,a cross between a red flower (RR) plant and white flowered plant (rr) result in all F1 generation plants being pink flowered (Rr) ,an intermediate phenotype. when a cross is carried out between two pink flowered plant,it results in an F2 generation where red,pink and white flowers are seen in the ratio of RR (Red): Rr( pink ) :rr ( white ) : that is equal to 1:2:1 .so both the phenotypic ratio are same
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