In a cross between true:breeding red:flowered plants and true:breeding white:flowered plants in the dog flower, the F₁ generation produced pink flowers due to incomplete dominance. If two F₁ plants are crossed, what would be the expected phenotype ratio of the F₂ generation?

Question

In a cross between true:breeding red:flowered plants and true:breeding white:flowered plants in the dog flower, the F₁ generation produced pink flowers due to incomplete dominance. If two F₁ plants are crossed, what would be the expected phenotype ratio of the F₂ generation?, 1 red: 2 pink: 1 white, 1 red: 1 pink: 1 white, 3 red: 1 white, 1 red: 1 white

MARKS App · Accepted Answer

When two F₁ plants are crossed, the genotypic ratio of the F₂ generation would be 1 RR : 2 Rr : 1 rr, following Mendelian monohybrid cross rules. However, the phenotype of the F₂ generation would be different from the classic 3:1 ratio of a dominant/recessive relationship, due to incomplete dominance. The expected phenotype ratio of the F₂ generation would be 1 red : 2 pink : 1 white.

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