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A pea plant shows the genetic makeup TtRr. How will the plant appear externally?
- a)Tall with wrinkled seeds
- b)Dwarf with round seeds
- c)Dwarf with wrinkled seeds
- d)Tall with round seeds
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
A pea plant shows the genetic makeup TtRr. How will the plant appear e...
Tall with round seeds
Since tallness of plant and round shape of seeds are dominant characters, these will be expressed in F2 generation.
Most Upvoted Answer
A pea plant shows the genetic makeup TtRr. How will the plant appear e...
Correct answer is:- (d) tall with round seeds
explanation:- since T and R are dominant traits and t and r are ressassive traits. So tall and round are dominant that's why they hide the identity of dwarf and wrinkled so that the seeds looks tall and round.
explanation:- since T and R are dominant traits and t and r are ressassive traits. So tall and round are dominant that's why they hide the identity of dwarf and wrinkled so that the seeds looks tall and round.
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A pea plant shows the genetic makeup TtRr. How will the plant appear e...
Explanation:
To determine the external appearance of a pea plant, we need to understand the concept of dominant and recessive alleles. In this case, the genetic makeup of the pea plant is TtRr, where T represents the dominant allele for tallness and t represents the recessive allele for dwarfness. Similarly, R represents the dominant allele for round seeds and r represents the recessive allele for wrinkled seeds.
Understanding the Cross
To determine the external appearance of the plant, we need to cross the two alleles and observe their phenotypic expression.
Possible Gametes
The possible gametes for the plant are TR, Tr, tR, and tr.
Punnett Square
Using a Punnett square, we can determine the possible genotypes and phenotypes of the offspring.
| | T | t |
|---|----|----|
| R | TR | tR |
| r | Tr | tr |
Possible Offspring
- TR: Tall with round seeds
- tR: Dwarf with round seeds
- Tr: Tall with wrinkled seeds
- tr: Dwarf with wrinkled seeds
Phenotypic Ratio
In the given genetic makeup TtRr, the phenotypic ratio is as follows:
- Tall with round seeds: 1
- Dwarf with round seeds: 1
- Tall with wrinkled seeds: 1
- Dwarf with wrinkled seeds: 1
Conclusion
Based on the Punnett square and the phenotypic ratio, we can determine that the plant will appear externally as tall with round seeds. Therefore, the correct answer is option D: Tall with round seeds.
To determine the external appearance of a pea plant, we need to understand the concept of dominant and recessive alleles. In this case, the genetic makeup of the pea plant is TtRr, where T represents the dominant allele for tallness and t represents the recessive allele for dwarfness. Similarly, R represents the dominant allele for round seeds and r represents the recessive allele for wrinkled seeds.
Understanding the Cross
To determine the external appearance of the plant, we need to cross the two alleles and observe their phenotypic expression.
Possible Gametes
The possible gametes for the plant are TR, Tr, tR, and tr.
Punnett Square
Using a Punnett square, we can determine the possible genotypes and phenotypes of the offspring.
| | T | t |
|---|----|----|
| R | TR | tR |
| r | Tr | tr |
Possible Offspring
- TR: Tall with round seeds
- tR: Dwarf with round seeds
- Tr: Tall with wrinkled seeds
- tr: Dwarf with wrinkled seeds
Phenotypic Ratio
In the given genetic makeup TtRr, the phenotypic ratio is as follows:
- Tall with round seeds: 1
- Dwarf with round seeds: 1
- Tall with wrinkled seeds: 1
- Dwarf with wrinkled seeds: 1
Conclusion
Based on the Punnett square and the phenotypic ratio, we can determine that the plant will appear externally as tall with round seeds. Therefore, the correct answer is option D: Tall with round seeds.
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A pea plant shows the genetic makeup TtRr. How will the plant appear externally?a)Tall with wrinkled seedsb)Dwarf with round seedsc)Dwarf with wrinkled seedsd)Tall with round seedsCorrect answer is option 'D'. Can you explain this answer?
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