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What is the ratio of round green and wrinked yellow seeds in F2 generation of Mendelian dihybrid cross?
- a)9 : 1
- b)1 :1
- c)3 :1
- d)1 : 3
Correct answer is option 'B'. Can you explain this answer?
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What is the ratio of round green and wrinked yellow seeds in F2 gener...
Explanation:
In Mendelian dihybrid cross, two traits are considered at a time. The ratio of round green and wrinkled yellow seeds in F2 generation of Mendelian dihybrid cross is 1:1.
Reasoning:
Mendel's law of independent assortment states that the inheritance of one trait does not affect the inheritance of another trait. In a dihybrid cross, two traits are considered at a time, and the alleles for each trait are distributed independently during gamete formation. Therefore, the ratio of the offspring with different combinations of alleles for both traits is 1:1:1:1.
In the F1 generation of a dihybrid cross, all the offspring are heterozygous for both traits. When these individuals are allowed to self-fertilize, the F2 generation is obtained. The F2 generation exhibits a ratio of 9:3:3:1 for the four possible combinations of alleles. However, when considering only the ratio of round green and wrinkled yellow seeds, the ratio is 1:1, as each combination of alleles has an equal chance of occurring.
In Mendelian dihybrid cross, two traits are considered at a time. The ratio of round green and wrinkled yellow seeds in F2 generation of Mendelian dihybrid cross is 1:1.
Reasoning:
Mendel's law of independent assortment states that the inheritance of one trait does not affect the inheritance of another trait. In a dihybrid cross, two traits are considered at a time, and the alleles for each trait are distributed independently during gamete formation. Therefore, the ratio of the offspring with different combinations of alleles for both traits is 1:1:1:1.
In the F1 generation of a dihybrid cross, all the offspring are heterozygous for both traits. When these individuals are allowed to self-fertilize, the F2 generation is obtained. The F2 generation exhibits a ratio of 9:3:3:1 for the four possible combinations of alleles. However, when considering only the ratio of round green and wrinkled yellow seeds, the ratio is 1:1, as each combination of alleles has an equal chance of occurring.
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Community Answer
What is the ratio of round green and wrinked yellow seeds in F2 gener...
Phenotype of dihybrid cross in F2 generation.
= Round yellow: Round green: Wrinkled yellow: Wrinkled green
= 9:3:3: 1
Hence, ratio of round green and wrinkled yellow
= 3 : 3
= 1 : 1
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What is the ratio of round green and wrinked yellow seeds in F2 generation of Mendelian dihybrid cross?a)9 : 1b)1 :1c)3 :1d)1 : 3Correct answer is option 'B'. Can you explain this answer?
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