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In a plant, red fruit (R) is dominant over yellow fruit (r) and tallness (T) dominant over shortness (t). A plant (T) dominant genotype is crossed with plant of rrtt genotype. The progeny is
- a)All red fruit, tall 25%
- b)All red fruit, tall 50%
- c)All red fruit, tall 75%
- d)All red fruit and tall
Correct answer is option 'B'. 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 tallne...
Genetic Background
In this plant genetics scenario, we have:
- Red fruit (R) is dominant over yellow fruit (r).
- Tallness (T) is dominant over shortness (t).
The genotype of the plants involved in the cross is as follows:
- Parent 1: T_R_ (dominant for both traits)
- Parent 2: rrtt (homozygous recessive for both traits)
Understanding the Cross
To determine the genotype of Parent 1, we know it has at least one R and one T allele, but the exact genotype for the tall plant (T_R_) needs to be defined. Since we are crossing this with a homozygous recessive plant (rrtt), let's assume Parent 1 is heterozygous:
- Parent 1: RrTt
- Parent 2: rrtt
Possible Gametes
From the genotypes, we can identify the possible gametes produced by each parent:
- Parent 1 (RrTt) can produce: RT, Rt, rT, rt
- Parent 2 (rrtt) can produce: rt (only one type)
Progeny Genotypes
When we perform the cross:
- Combine each gamete from Parent 1 with the gamete from Parent 2 (rt):
- RT (Red, Tall)
- Rt (Red, Short)
- rT (Yellow, Tall)
- rt (Yellow, Short)
However, since Parent 2 is rrtt, we only consider RT and Rt combinations. Thus, the resulting progeny will be:
- 50% Red, Tall (RrTt)
- 50% Red, Short (Rrtt)
Conclusion
Thus, the correct interpretation of the progeny is:
- All will have red fruits (due to the R allele).
- 50% will be tall (RrTt) and 50% will be short (Rrtt).
Hence, the correct answer is option 'B': All red fruit, tall 50%.
In this plant genetics scenario, we have:
- Red fruit (R) is dominant over yellow fruit (r).
- Tallness (T) is dominant over shortness (t).
The genotype of the plants involved in the cross is as follows:
- Parent 1: T_R_ (dominant for both traits)
- Parent 2: rrtt (homozygous recessive for both traits)
Understanding the Cross
To determine the genotype of Parent 1, we know it has at least one R and one T allele, but the exact genotype for the tall plant (T_R_) needs to be defined. Since we are crossing this with a homozygous recessive plant (rrtt), let's assume Parent 1 is heterozygous:
- Parent 1: RrTt
- Parent 2: rrtt
Possible Gametes
From the genotypes, we can identify the possible gametes produced by each parent:
- Parent 1 (RrTt) can produce: RT, Rt, rT, rt
- Parent 2 (rrtt) can produce: rt (only one type)
Progeny Genotypes
When we perform the cross:
- Combine each gamete from Parent 1 with the gamete from Parent 2 (rt):
- RT (Red, Tall)
- Rt (Red, Short)
- rT (Yellow, Tall)
- rt (Yellow, Short)
However, since Parent 2 is rrtt, we only consider RT and Rt combinations. Thus, the resulting progeny will be:
- 50% Red, Tall (RrTt)
- 50% Red, Short (Rrtt)
Conclusion
Thus, the correct interpretation of the progeny is:
- All will have red fruits (due to the R allele).
- 50% will be tall (RrTt) and 50% will be short (Rrtt).
Hence, the correct answer is option 'B': All red fruit, tall 50%.
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In a plant, red fruit (R) is dominant over yellow fruit (r) and tallne...
B
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In a plant, red fruit (R) is dominant over yellow fruit (r) and tallness (T) dominant over shortness (t). A plant (T) dominant genotype is crossed with plant of rrtt genotype. The progeny isa)All red fruit, tall 25%b)All red fruit, tall 50%c)All red fruit, tall 75%d)All red fruit and tallCorrect answer is option 'B'. Can you explain this answer?
Question Description
In a plant, red fruit (R) is dominant over yellow fruit (r) and tallness (T) dominant over shortness (t). A plant (T) dominant genotype is crossed with plant of rrtt genotype. The progeny isa)All red fruit, tall 25%b)All red fruit, tall 50%c)All red fruit, tall 75%d)All red fruit and tallCorrect answer is option 'B'. 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) dominant over shortness (t). A plant (T) dominant genotype is crossed with plant of rrtt genotype. The progeny isa)All red fruit, tall 25%b)All red fruit, tall 50%c)All red fruit, tall 75%d)All red fruit and tallCorrect answer is option 'B'. 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) dominant over shortness (t). A plant (T) dominant genotype is crossed with plant of rrtt genotype. The progeny isa)All red fruit, tall 25%b)All red fruit, tall 50%c)All red fruit, tall 75%d)All red fruit and tallCorrect answer is option 'B'. Can you explain this answer?.
In a plant, red fruit (R) is dominant over yellow fruit (r) and tallness (T) dominant over shortness (t). A plant (T) dominant genotype is crossed with plant of rrtt genotype. The progeny isa)All red fruit, tall 25%b)All red fruit, tall 50%c)All red fruit, tall 75%d)All red fruit and tallCorrect answer is option 'B'. 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) dominant over shortness (t). A plant (T) dominant genotype is crossed with plant of rrtt genotype. The progeny isa)All red fruit, tall 25%b)All red fruit, tall 50%c)All red fruit, tall 75%d)All red fruit and tallCorrect answer is option 'B'. 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) dominant over shortness (t). A plant (T) dominant genotype is crossed with plant of rrtt genotype. The progeny isa)All red fruit, tall 25%b)All red fruit, tall 50%c)All red fruit, tall 75%d)All red fruit and tallCorrect answer is option 'B'. Can you explain this answer?.
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