When red and white flowered Mirabilis plants are crossed?
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Correct option (c) 1:2:1 and 1:2:1 Show
Explanation: Son.retimes two genes of the allelomorphic pair do not show a dominant-recessive relationship, but when presents together, they show intermediate trait or incomplete dominance. Incomplete dominance is not blending inheritance because parental characters reappear in F2 generation. ln Mirabilis jalapa, there are two types of pure breeding plants, red flowered and white flowered. On crossing them the F1 plants or hybrids possess pink flowers. On selfing them, F2 generation has plants in the ratio of 1 red: 2 pinks: 1 white-flowered plants with the phenotypic ratio being the same as a genotypic ratio. Genotypic ratio= 1RR: 2Rr: 1rr Phenotypic ratio: 1 Red : 2 Pink : 1 White Both genotypic ratio and phenotypic ratio are same, i.e., 1 :2 :1.
A 1:2:1 and 3:1:1B 3:1 and 1:2:1C 1:2:1 and 1:2:1D 1:1 and 1:1:1Solution: Sometimes two genes of allelomorphic pair do not show dominant-recessive relationship, but when present together, they show intermediate trait or incomplete dominance. Incomplete dominance is not blending inheritance because parental characters reappear in F2 generation. In Mirabilis jalapa, there are two types of pure breeding plants, red flowered and white flowered. On crossing them the F1 plants or hybrids possess pink flowers. On selfing them, F2 generation has plants in the ratio of 1 red : 2 pink : 1 white flowered plants with phenotypic ratio being same as genotypic ratio. Genotypic ratio = 1RR : 2Rr : 1rr Phenotypic ratio = 1 Red : 2 Pink : 1 White Both genotypic ratio and phenotypic ratio are same, i.e., 1 : 2 : 1.Video Solution Open in App Solution The correct option is B 30 red and 60 pink and 30 whiteThe phenotypic and genotypic ratio of F2 generation is (1RR: 2Rr: 1rr) Total 120 plants are produced in F2. So, out of 120 plants, 2 parts are pink, 1 part is red, and the remaining 1 part is white i.e., 60 plants are pink, 30 are red and 30 are white.Factors Affecting Plant Growth Standard XII Biology Suggest Corrections 0 Related Answer When red and white flowered Mirabilis plants are crossed, all pink flowers are produced in `F_(1)` generation. When `F_(1)` progeny is selfed , the expected phenotypic and genotypic ratios are, respectively . When red and white flowered Mirabilis plants are crossed all pink flowers?ln Mirabilis jalapa there are two types of pure breeding plants red flowered and white flowered. On crossing them the F1 plants or hybrids possess pink flowers. On selfing them F2 generation has plants in the ratio of 1 red: 2 pinks: 1 white-flowered plants with the phenotypic ratio being the same as a genotypic ratio.
When red and white Hybrided Mirabilis crossed r1 generations if this pink hybrid is then crossed with the white the phenotypic ratios among the progeny would be ?So, the correct option is '1 pink: 1 white'.
When a red flower homozygous Mirabilis jalapa plant is crossed with a white flower plant what colour is produced in F1?In Mirabilis jalapa when homozygous red flowered and white flowered plants are crossed, all F1 plants have pink coloured flowers.
When red and white flowered plants of Mirabilis jalapa are crossed then the ratio of F2 generation will be?So, the correct option is '1:2:1'. Was this answer helpful?
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