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For a cross between hybrid tall round (TtRr) and recessive dwarf wrinkled (ttrr) pea plant, the ratio of phenotypes and genotypes obtained in F₁ generation is respectively
- a)1:1:1:1and 1:1:1:1
- b)9:3 and 1:1:1:1
- c)9:3:3:1 and 1:1:1:1
- d)none above
Correct answer is option 'A'. Can you explain this answer?
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For a cross between hybrid tall round (TtRr) and recessive dwarf wrink...
Explanation:
When two different varieties of pea plants are crossed, the offspring obtained are referred to as F1 generation. The F1 generation is a result of the cross between two pure lines that differ in one or more traits. The traits that are expressed in the F1 generation are referred to as dominant traits while the traits that are not expressed are called recessive traits. In this case, the cross is between hybrid tall round and recessive dwarf wrinkled pea plants. The dominant traits are tall and round while the recessive traits are dwarf and wrinkled.
Genotypes of F1 Generation:
The genotypes of the F1 generation can be determined using a Punnett square. The cross between the hybrid tall round and the recessive dwarf wrinkled pea plants can be represented as follows:
TtRr x ttrr
The Punnett square for this cross would be as follows:
The genotypes of the F1 generation can be obtained by combining the alleles in the corresponding boxes of the Punnett square. The possible genotypes of the F1 generation are:
TR, tR, Tr, tr
The genotypic ratio of the F1 generation is 1:1:1:1.
Phenotypes of F1 Generation:
The phenotypes of the F1 generation can be determined by observing the physical characteristics of the offspring. The dominant traits in this cross are tall and round, while the recessive traits are dwarf and wrinkled. The possible phenotypes of the F1 generation are:
Tall and round, tall and wrinkled, dwarf and round, dwarf and wrinkled
The phenotypic ratio of the F1 generation is also 1:1:1:1.
Conclusion:
Therefore, the ratio of phenotypes and genotypes obtained in the F1 generation is 1:1:1:1.
When two different varieties of pea plants are crossed, the offspring obtained are referred to as F1 generation. The F1 generation is a result of the cross between two pure lines that differ in one or more traits. The traits that are expressed in the F1 generation are referred to as dominant traits while the traits that are not expressed are called recessive traits. In this case, the cross is between hybrid tall round and recessive dwarf wrinkled pea plants. The dominant traits are tall and round while the recessive traits are dwarf and wrinkled.
Genotypes of F1 Generation:
The genotypes of the F1 generation can be determined using a Punnett square. The cross between the hybrid tall round and the recessive dwarf wrinkled pea plants can be represented as follows:
TtRr x ttrr
The Punnett square for this cross would be as follows:
| T | t | |
|---|---|---|
| R | TR | tR |
| r | Tr | tr |
The genotypes of the F1 generation can be obtained by combining the alleles in the corresponding boxes of the Punnett square. The possible genotypes of the F1 generation are:
TR, tR, Tr, tr
The genotypic ratio of the F1 generation is 1:1:1:1.
Phenotypes of F1 Generation:
The phenotypes of the F1 generation can be determined by observing the physical characteristics of the offspring. The dominant traits in this cross are tall and round, while the recessive traits are dwarf and wrinkled. The possible phenotypes of the F1 generation are:
Tall and round, tall and wrinkled, dwarf and round, dwarf and wrinkled
The phenotypic ratio of the F1 generation is also 1:1:1:1.
Conclusion:
Therefore, the ratio of phenotypes and genotypes obtained in the F1 generation is 1:1:1:1.
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For a cross between hybrid tall round (TtRr) and recessive dwarf wrinkled (ttrr) pea plant, the ratio of phenotypes and genotypes obtained in F₁ generation is respectivelya)1:1:1:1and 1:1:1:1b)9:3 and 1:1:1:1c)9:3:3:1 and 1:1:1:1d)none aboveCorrect answer is option 'A'. Can you explain this answer?
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For a cross between hybrid tall round (TtRr) and recessive dwarf wrinkled (ttrr) pea plant, the ratio of phenotypes and genotypes obtained in F₁ generation is respectivelya)1:1:1:1and 1:1:1:1b)9:3 and 1:1:1:1c)9:3:3:1 and 1:1:1:1d)none aboveCorrect answer is option 'A'. 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 For a cross between hybrid tall round (TtRr) and recessive dwarf wrinkled (ttrr) pea plant, the ratio of phenotypes and genotypes obtained in F₁ generation is respectivelya)1:1:1:1and 1:1:1:1b)9:3 and 1:1:1:1c)9:3:3:1 and 1:1:1:1d)none aboveCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For a cross between hybrid tall round (TtRr) and recessive dwarf wrinkled (ttrr) pea plant, the ratio of phenotypes and genotypes obtained in F₁ generation is respectivelya)1:1:1:1and 1:1:1:1b)9:3 and 1:1:1:1c)9:3:3:1 and 1:1:1:1d)none aboveCorrect answer is option 'A'. Can you explain this answer?.
For a cross between hybrid tall round (TtRr) and recessive dwarf wrinkled (ttrr) pea plant, the ratio of phenotypes and genotypes obtained in F₁ generation is respectivelya)1:1:1:1and 1:1:1:1b)9:3 and 1:1:1:1c)9:3:3:1 and 1:1:1:1d)none aboveCorrect answer is option 'A'. 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 For a cross between hybrid tall round (TtRr) and recessive dwarf wrinkled (ttrr) pea plant, the ratio of phenotypes and genotypes obtained in F₁ generation is respectivelya)1:1:1:1and 1:1:1:1b)9:3 and 1:1:1:1c)9:3:3:1 and 1:1:1:1d)none aboveCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For a cross between hybrid tall round (TtRr) and recessive dwarf wrinkled (ttrr) pea plant, the ratio of phenotypes and genotypes obtained in F₁ generation is respectivelya)1:1:1:1and 1:1:1:1b)9:3 and 1:1:1:1c)9:3:3:1 and 1:1:1:1d)none aboveCorrect answer is option 'A'. Can you explain this answer?.
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