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Incomplete dominance is found in
- a)Neurospora crassa
- b)Lathyrus odoratus
- c)Pisum sativum
- d)Antirrhinum
Correct answer is option 'D'. Can you explain this answer?
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Incomplete dominance is found ina)Neurospora crassab)Lathyrus odoratus...
Antirrhinum
Antirrhinum, commonly known as snapdragon, exhibits incomplete dominance. In incomplete dominance, the heterozygous genotype results in a phenotype that is a blend of the two homozygous phenotypes.
Explanation:
Incomplete dominance can be observed in Antirrhinum when a red-flowered plant (RR) is crossed with a white-flowered plant (WW). The resulting offspring with the genotype RW will have pink flowers, which is a blend of the red and white colors.
Example:
- RR (red) x WW (white) → RW (pink)
Phenotypic Ratio:
When two plants with incomplete dominance are crossed, the phenotypic ratio in the offspring will be 1:2:1. This means that there will be one red-flowered plant, two pink-flowered plants, and one white-flowered plant in the offspring.
Genotypic Ratio:
The genotypic ratio in this case will be 1:2:1 as well, with one RR (red), two RW (pink), and one WW (white) plants.
Conclusion:
Antirrhinum is a classic example of incomplete dominance, where the heterozygous genotype results in an intermediate phenotype. This genetic phenomenon is important in understanding the inheritance patterns of traits in organisms.
Antirrhinum, commonly known as snapdragon, exhibits incomplete dominance. In incomplete dominance, the heterozygous genotype results in a phenotype that is a blend of the two homozygous phenotypes.
Explanation:
Incomplete dominance can be observed in Antirrhinum when a red-flowered plant (RR) is crossed with a white-flowered plant (WW). The resulting offspring with the genotype RW will have pink flowers, which is a blend of the red and white colors.
Example:
- RR (red) x WW (white) → RW (pink)
Phenotypic Ratio:
When two plants with incomplete dominance are crossed, the phenotypic ratio in the offspring will be 1:2:1. This means that there will be one red-flowered plant, two pink-flowered plants, and one white-flowered plant in the offspring.
Genotypic Ratio:
The genotypic ratio in this case will be 1:2:1 as well, with one RR (red), two RW (pink), and one WW (white) plants.
Conclusion:
Antirrhinum is a classic example of incomplete dominance, where the heterozygous genotype results in an intermediate phenotype. This genetic phenomenon is important in understanding the inheritance patterns of traits in organisms.
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Incomplete dominance is found ina)Neurospora crassab)Lathyrus odoratusc)Pisum sativumd)AntirrhinumCorrect answer is option 'D'. Can you explain this answer?
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