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In a plant, red fruit (R) is dominant over yellow fruit (r), and tallness (T) is dominant over shortness (t). A plant with RRTT genotype is crossed with a plant that is rrtt. Then in F1 generation,
- a)25% will be tall with red fruits
- b)50% will be tall with red fruits
- c)75% will be tall with red fruits
- d)100% will be tall with red fruits
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
In a plant, red fruit (R) is dominant over yellow fruit (r), and tall...
Explanation:
To determine the inheritance pattern of the traits in question, we need to understand the principles of Mendelian genetics.
Mendelian Genetics:
Mendelian genetics is based on the principles discovered by Gregor Mendel, the father of modern genetics. He conducted experiments with pea plants and observed the inheritance of different traits.
Mendel proposed that traits are determined by discrete units called "alleles" and that these alleles segregate and assort independently during gamete formation. This means that each parent contributes one allele for each trait to their offspring.
Dominant and Recessive Alleles:
In this plant, red fruit (R) is dominant over yellow fruit (r), and tallness (T) is dominant over shortness (t). Dominant alleles are represented by uppercase letters, and recessive alleles by lowercase letters.
Genotypes of Parental Plants:
The plant with RRTT genotype has the dominant alleles for both traits (red fruit and tallness). The plant with rrtt genotype has the recessive alleles for both traits (yellow fruit and shortness).
Punnett Square:
To determine the genotypes and phenotypes of the F1 generation, we can use a Punnett square. The Punnett square allows us to visualize the possible combinations of alleles that can be formed when the parental gametes combine.
The gametes of the RRTT plant will have RT alleles, and the gametes of the rrtt plant will have rt alleles.
The Punnett square for this cross would look like this:
R R
T RT RT
t Rt Rt
r r
T RT RT
t Rt Rt
Genotypes and Phenotypes of F1 Generation:
From the Punnett square, we can see that all the offspring in the F1 generation will have the genotype RrTt. This means that they will be heterozygous for both traits, having one dominant and one recessive allele for each trait.
Since red fruit (R) and tallness (T) are dominant traits, all the F1 plants will exhibit these traits phenotypically. Therefore, 100% of the F1 generation will be tall with red fruits.
Conclusion:
Based on the principles of Mendelian genetics and the Punnett square analysis, the correct answer is option 'D': 100% of the F1 generation will be tall with red fruits.
To determine the inheritance pattern of the traits in question, we need to understand the principles of Mendelian genetics.
Mendelian Genetics:
Mendelian genetics is based on the principles discovered by Gregor Mendel, the father of modern genetics. He conducted experiments with pea plants and observed the inheritance of different traits.
Mendel proposed that traits are determined by discrete units called "alleles" and that these alleles segregate and assort independently during gamete formation. This means that each parent contributes one allele for each trait to their offspring.
Dominant and Recessive Alleles:
In this plant, red fruit (R) is dominant over yellow fruit (r), and tallness (T) is dominant over shortness (t). Dominant alleles are represented by uppercase letters, and recessive alleles by lowercase letters.
Genotypes of Parental Plants:
The plant with RRTT genotype has the dominant alleles for both traits (red fruit and tallness). The plant with rrtt genotype has the recessive alleles for both traits (yellow fruit and shortness).
Punnett Square:
To determine the genotypes and phenotypes of the F1 generation, we can use a Punnett square. The Punnett square allows us to visualize the possible combinations of alleles that can be formed when the parental gametes combine.
The gametes of the RRTT plant will have RT alleles, and the gametes of the rrtt plant will have rt alleles.
The Punnett square for this cross would look like this:
R R
T RT RT
t Rt Rt
r r
T RT RT
t Rt Rt
Genotypes and Phenotypes of F1 Generation:
From the Punnett square, we can see that all the offspring in the F1 generation will have the genotype RrTt. This means that they will be heterozygous for both traits, having one dominant and one recessive allele for each trait.
Since red fruit (R) and tallness (T) are dominant traits, all the F1 plants will exhibit these traits phenotypically. Therefore, 100% of the F1 generation will be tall with red fruits.
Conclusion:
Based on the principles of Mendelian genetics and the Punnett square analysis, the correct answer is option 'D': 100% of the F1 generation will be tall with red fruits.
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In a plant, red fruit (R) is dominant over yellow fruit (r), and tall...
A plant with RRTT genotype is crossed with a plant that is rrtt. The F1 generation will have all offspring tall with red fruits.
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In a plant, red fruit (R) is dominant over yellow fruit (r), and tallness (T) is dominant over shortness (t). A plant with RRTT genotype is crossed with a plant that is rrtt. Then in F1 generation,a)25% will be tall with red fruitsb)50% will be tall with red fruitsc)75% will be tall with red fruitsd)100% will be tall with red fruitsCorrect answer is option 'D'. Can you explain this answer?
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In a plant, red fruit (R) is dominant over yellow fruit (r), and tallness (T) is dominant over shortness (t). A plant with RRTT genotype is crossed with a plant that is rrtt. Then in F1 generation,a)25% will be tall with red fruitsb)50% will be tall with red fruitsc)75% will be tall with red fruitsd)100% will be tall with red fruitsCorrect answer is option 'D'. 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 In a plant, red fruit (R) is dominant over yellow fruit (r), and tallness (T) is dominant over shortness (t). A plant with RRTT genotype is crossed with a plant that is rrtt. Then in F1 generation,a)25% will be tall with red fruitsb)50% will be tall with red fruitsc)75% will be tall with red fruitsd)100% will be tall with red fruitsCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a plant, red fruit (R) is dominant over yellow fruit (r), and tallness (T) is dominant over shortness (t). A plant with RRTT genotype is crossed with a plant that is rrtt. Then in F1 generation,a)25% will be tall with red fruitsb)50% will be tall with red fruitsc)75% will be tall with red fruitsd)100% will be tall with red fruitsCorrect answer is option 'D'. Can you explain this answer?.
In a plant, red fruit (R) is dominant over yellow fruit (r), and tallness (T) is dominant over shortness (t). A plant with RRTT genotype is crossed with a plant that is rrtt. Then in F1 generation,a)25% will be tall with red fruitsb)50% will be tall with red fruitsc)75% will be tall with red fruitsd)100% will be tall with red fruitsCorrect answer is option 'D'. 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 In a plant, red fruit (R) is dominant over yellow fruit (r), and tallness (T) is dominant over shortness (t). A plant with RRTT genotype is crossed with a plant that is rrtt. Then in F1 generation,a)25% will be tall with red fruitsb)50% will be tall with red fruitsc)75% will be tall with red fruitsd)100% will be tall with red fruitsCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a plant, red fruit (R) is dominant over yellow fruit (r), and tallness (T) is dominant over shortness (t). A plant with RRTT genotype is crossed with a plant that is rrtt. Then in F1 generation,a)25% will be tall with red fruitsb)50% will be tall with red fruitsc)75% will be tall with red fruitsd)100% will be tall with red fruitsCorrect answer is option 'D'. Can you explain this answer?.
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