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What is the expected percentage of F2 progeny with yellow and inflated pod in dihybrid cross experiment involving pea plants with green coloured, inflated pod and yellow coloured constricted pod? (NEET 2022 Phase 2)
- a)9%
- b)100%
- c)56.25%
- d)18.75%
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
What is the expected percentage of F2progeny with yellow and inflated ...
Understanding the Dihybrid Cross
In a dihybrid cross involving pea plants, we are looking at two traits: pod color (yellow vs. green) and pod shape (inflated vs. constricted). In this scenario:
- Green color (G) is dominant over yellow color (g).
- Inflated shape (I) is dominant over constricted shape (i).
The parental genotypes can be represented as:
- Parent 1: Homozygous green inflated (GGII)
- Parent 2: Homozygous yellow constricted (ggii)
F1 Generation
Crossing these parents produces the F1 generation:
- All offspring will be heterozygous (GgIi) exhibiting green and inflated pods due to the dominance of both traits.
F2 Generation
When F1 plants are self-fertilized (GgIi x GgIi), the F2 generation is produced. We can analyze the phenotypic ratio using a Punnett square or by applying the independent assortment principle. The expected phenotypic ratio for a dihybrid cross is:
- 9:3:3:1 ratio
This translates to:
- 9 green inflated
- 3 green constricted
- 3 yellow inflated
- 1 yellow constricted
Calculating the Expected Phenotype
To find the percentage of F2 progeny with yellow and inflated pods, we look at the 3 yellow inflated from the ratio:
- Total phenotypes = 16 (9 + 3 + 3 + 1)
- Yellow inflated = 3 out of 16
Final Calculation
Thus, the percentage of yellow inflated pods in the F2 generation is:
- (3/16) * 100 = 18.75%
Therefore, the expected percentage of F2 progeny with yellow and inflated pods is 18.75%.
The correct answer is option D.
In a dihybrid cross involving pea plants, we are looking at two traits: pod color (yellow vs. green) and pod shape (inflated vs. constricted). In this scenario:
- Green color (G) is dominant over yellow color (g).
- Inflated shape (I) is dominant over constricted shape (i).
The parental genotypes can be represented as:
- Parent 1: Homozygous green inflated (GGII)
- Parent 2: Homozygous yellow constricted (ggii)
F1 Generation
Crossing these parents produces the F1 generation:
- All offspring will be heterozygous (GgIi) exhibiting green and inflated pods due to the dominance of both traits.
F2 Generation
When F1 plants are self-fertilized (GgIi x GgIi), the F2 generation is produced. We can analyze the phenotypic ratio using a Punnett square or by applying the independent assortment principle. The expected phenotypic ratio for a dihybrid cross is:
- 9:3:3:1 ratio
This translates to:
- 9 green inflated
- 3 green constricted
- 3 yellow inflated
- 1 yellow constricted
Calculating the Expected Phenotype
To find the percentage of F2 progeny with yellow and inflated pods, we look at the 3 yellow inflated from the ratio:
- Total phenotypes = 16 (9 + 3 + 3 + 1)
- Yellow inflated = 3 out of 16
Final Calculation
Thus, the percentage of yellow inflated pods in the F2 generation is:
- (3/16) * 100 = 18.75%
Therefore, the expected percentage of F2 progeny with yellow and inflated pods is 18.75%.
The correct answer is option D.
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Community Answer
What is the expected percentage of F2progeny with yellow and inflated ...
(G) Green pod colour is dominant over yellow pod colour (g)
(I) Inflated pod is dominant over constricted pod (i)
(I) Inflated pod is dominant over constricted pod (i)
Expected percentage of F2 progeny with yellow – inflated pod in this cross is
1/4 x 3/4 x 100 = 18.75%
1/4 x 3/4 x 100 = 18.75%
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What is the expected percentage of F2progeny with yellow and inflated pod in dihybrid cross experiment involving pea plants with green coloured, inflated pod and yellow coloured constricted pod? (NEET 2022 Phase 2)a)9%b)100%c)56.25%d)18.75%Correct answer is option 'D'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about What is the expected percentage of F2progeny with yellow and inflated pod in dihybrid cross experiment involving pea plants with green coloured, inflated pod and yellow coloured constricted pod? (NEET 2022 Phase 2)a)9%b)100%c)56.25%d)18.75%Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is the expected percentage of F2progeny with yellow and inflated pod in dihybrid cross experiment involving pea plants with green coloured, inflated pod and yellow coloured constricted pod? (NEET 2022 Phase 2)a)9%b)100%c)56.25%d)18.75%Correct answer is option 'D'. Can you explain this answer?.
What is the expected percentage of F2progeny with yellow and inflated pod in dihybrid cross experiment involving pea plants with green coloured, inflated pod and yellow coloured constricted pod? (NEET 2022 Phase 2)a)9%b)100%c)56.25%d)18.75%Correct answer is option 'D'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about What is the expected percentage of F2progeny with yellow and inflated pod in dihybrid cross experiment involving pea plants with green coloured, inflated pod and yellow coloured constricted pod? (NEET 2022 Phase 2)a)9%b)100%c)56.25%d)18.75%Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is the expected percentage of F2progeny with yellow and inflated pod in dihybrid cross experiment involving pea plants with green coloured, inflated pod and yellow coloured constricted pod? (NEET 2022 Phase 2)a)9%b)100%c)56.25%d)18.75%Correct answer is option 'D'. Can you explain this answer?.
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