GENETICS AND EVOLUTION
INHERITANCE AND VARIATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In a red and white-flowered cross of Mirabilis jalapa, F2 generation has red, pink and white-flowered plants in the ratio of
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2:1:1
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1:1:2
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1:2:1
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1:0:1
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Explanation:
Detailed explanation-1: -So, the correct option is ‘1:2:1’.
Detailed explanation-2: -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.
Detailed explanation-3: -So, the correct answer is ‘1:2:1’
Detailed explanation-4: -In Mirabilis jalapa, a red-flowered plant was crossed with a white-flowered plant, which resulted in all pink-flowered plants.
Detailed explanation-5: -So, the correct answer is, ”1:2:1”.
There is 1 question to complete.