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In Mirabilis jalapa when two F1pink flowered plants were crossed with each other, the F2 generation produced 40 red, 80 pink and 40 white flowering plants. This a case of:
- a)Duplicate genes
- b)Epistatis
- c)Incomplete dominance
- d)Lethal genes
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
In Mirabilis jalapa when two F1pink flowered plants were crossed with ...
F1pink flowered plants are heterozygous. When selfing is done the genotype and phenotype develops as 1:2:1 as 40 red, 80 pink and 40 white flowering plants.
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In Mirabilis jalapa when two F1pink flowered plants were crossed with ...
Explanation:
The given problem can be solved by applying the laws of Mendelian inheritance.
Mendel's law of dominance states that in a heterozygous individual, only one allele (dominant) is expressed, while the other (recessive) remains hidden. Incomplete dominance, on the other hand, is a type of inheritance where the heterozygous phenotype is intermediate between the two homozygous phenotypes.
In this case, the F1 generation produced pink flowers when two pink flowered plants were crossed. This suggests that the pink flowered trait is dominant over the white flowered trait.
When two F1 pink flowered plants were crossed with each other, the resulting F2 generation produced 40 red, 80 pink and 40 white flowering plants. This distribution of phenotypes suggests that the inheritance of the flower color trait in Mirabilis jalapa is an example of incomplete dominance.
- Incomplete dominance:
- Incomplete dominance is a type of inheritance where the heterozygous phenotype is intermediate between the two homozygous phenotypes.
- In this case, the F1 pink flowered plants were heterozygous for the flower color trait.
- When these plants were crossed with each other, the resulting F2 generation had three phenotypes - red, pink and white.
- The ratio of the three phenotypes was 1:2:1, which is the expected ratio for incomplete dominance.
- The red and white flowered plants are homozygous for their respective traits, while the pink flowered plants are heterozygous.
- The pink color is an intermediate between the two homozygous phenotypes.
- This suggests that the pink flowered trait is not completely dominant over the white flowered trait.
Therefore, the correct answer is option 'C' - Incomplete dominance.
The given problem can be solved by applying the laws of Mendelian inheritance.
Mendel's law of dominance states that in a heterozygous individual, only one allele (dominant) is expressed, while the other (recessive) remains hidden. Incomplete dominance, on the other hand, is a type of inheritance where the heterozygous phenotype is intermediate between the two homozygous phenotypes.
In this case, the F1 generation produced pink flowers when two pink flowered plants were crossed. This suggests that the pink flowered trait is dominant over the white flowered trait.
When two F1 pink flowered plants were crossed with each other, the resulting F2 generation produced 40 red, 80 pink and 40 white flowering plants. This distribution of phenotypes suggests that the inheritance of the flower color trait in Mirabilis jalapa is an example of incomplete dominance.
- Incomplete dominance:
- Incomplete dominance is a type of inheritance where the heterozygous phenotype is intermediate between the two homozygous phenotypes.
- In this case, the F1 pink flowered plants were heterozygous for the flower color trait.
- When these plants were crossed with each other, the resulting F2 generation had three phenotypes - red, pink and white.
- The ratio of the three phenotypes was 1:2:1, which is the expected ratio for incomplete dominance.
- The red and white flowered plants are homozygous for their respective traits, while the pink flowered plants are heterozygous.
- The pink color is an intermediate between the two homozygous phenotypes.
- This suggests that the pink flowered trait is not completely dominant over the white flowered trait.
Therefore, the correct answer is option 'C' - Incomplete dominance.
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In Mirabilis jalapa when two F1pink flowered plants were crossed with ...
Incomplete dominance... As the ratio is 1:2:1
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In Mirabilis jalapa when two F1pink flowered plants were crossed with each other, the F2 generation produced 40 red, 80 pink and 40 white flowering plants. This a case of:a)Duplicate genesb)Epistatisc)Incomplete dominanced)Lethal genesCorrect answer is option 'C'. Can you explain this answer?
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In Mirabilis jalapa when two F1pink flowered plants were crossed with each other, the F2 generation produced 40 red, 80 pink and 40 white flowering plants. This a case of:a)Duplicate genesb)Epistatisc)Incomplete dominanced)Lethal genesCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In Mirabilis jalapa when two F1pink flowered plants were crossed with each other, the F2 generation produced 40 red, 80 pink and 40 white flowering plants. This a case of:a)Duplicate genesb)Epistatisc)Incomplete dominanced)Lethal genesCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In Mirabilis jalapa when two F1pink flowered plants were crossed with each other, the F2 generation produced 40 red, 80 pink and 40 white flowering plants. This a case of:a)Duplicate genesb)Epistatisc)Incomplete dominanced)Lethal genesCorrect answer is option 'C'. Can you explain this answer?.
In Mirabilis jalapa when two F1pink flowered plants were crossed with each other, the F2 generation produced 40 red, 80 pink and 40 white flowering plants. This a case of:a)Duplicate genesb)Epistatisc)Incomplete dominanced)Lethal genesCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In Mirabilis jalapa when two F1pink flowered plants were crossed with each other, the F2 generation produced 40 red, 80 pink and 40 white flowering plants. This a case of:a)Duplicate genesb)Epistatisc)Incomplete dominanced)Lethal genesCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In Mirabilis jalapa when two F1pink flowered plants were crossed with each other, the F2 generation produced 40 red, 80 pink and 40 white flowering plants. This a case of:a)Duplicate genesb)Epistatisc)Incomplete dominanced)Lethal genesCorrect answer is option 'C'. Can you explain this answer?.
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