When red and white flowered Mirabilis crossed pink hybrids will this F1 generation if this pink hybrid is then crossed with the white F2?
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In Red White-flowered cross of Mirabilis jalapa, F2 generation has red, pink, and white flower plant in the ratio of(a) 1:2:1(b) 1:0:1(c) 2:1:1(d) 1:1:2Answer Verified Hint: Incomplete dominance is a type of inheritance in which one allele for a specific trait is not completely dominant over the other allele i.e. neither allele is dominant over the other in heterozygous organisms. This results in a combined phenotype. Incomplete dominance is also called mosaic or partial dominance. Here new phenotypic characters are expressed entirely. Complete Step by Step Answer: - Mirabilis jalapa has two types of pure breeding plants, red flowers, and white flowers. The phenotype of red flowers is considered to be as “RR” whereas the phenotype of the white flower as “rr”.When they are crossed, produce the first filial generation and all flowers possess pink color which shows blending inheritance. This clearly indicates that neither red flower nor white flower condition is dominant but when F1 generation crossed with F1 generation(on selfing them), the Second filial generation i.e. F2 generation plants show red flower, pink flower, and white flower condition in the ratio 1:2:1 i.e. RR:2Rr:rr. - This clearly indicates the phenomenon of incomplete dominance. So, the correct answer is, ”1:2:1”. Additional information: Note: Correct option (c) 1:2:1 and 1:2:1 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.
Problem 10: Disappearance of parental phenotypes in the F1 generationA genetic cross of inbred snapdragons with red flowers with inbred snapdragons with white flowers resulted in F1-hybrid offspring that all had pink flowers. When the F1 plants were self-pollinated, the resulting F2-generation plants had a phenotypic ratio of 1 red: 2 pink: 1 white. The most likely explanation is: TutorialIncomplete dominance
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Biology Project http://www.biology.arizona.edu When red tailed Mirabilis crossed pink hybrids occur in F1 generation 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 red and white flowering Mirabilis plants are crossed F1 shows all pink flowers when the progeny is Selfed the expected phenotypic and genotypic ratios are?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 a red flower and a white flower are crossed and produce pink offspring what type of interaction is taking place?Figure 21: A cross between a red and white snapdragon will yield 100% pink offspring. This pattern of inheritance is described as incomplete dominance, meaning that neither of the alleles is completely dominant over the other: both alleles can be seen at the same time.
When F1 hybrids of parental red flowered and white flowered Mirabilis plants are test crossed the percentage of red flowers will be a 50% B 75% C 25% D 0%?So, the correct answer is '50% pink and 50% red'.
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