NEET Exam > NEET Questions > In a plant, black seed color (BB/Bb) is domin...
Start Learning for Free
In a plant, black seed color (BB/Bb) is dominant over white seed color (bb). In order to find out the genotype of the black seed plant, with which of the following genotype will you cross it? (NEET 2024)
- a)BB
- b)bb
- c)Bb
- d)BB/Bb
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
In a plant, black seed color (BB/Bb) is dominant over white seed color...
To determine the genotype of a black seed plant that could either be homozygous dominant (BB) or heterozygous (Bb), you need to perform a test cross. A test cross involves crossing the individual in question with a homozygous recessive individual. In this scenario, that would be a plant with white seed color, or genotype bb.
A test cross is used because it can reveal whether the black seed plant carries the recessive b allele. When crossed with a homozygous recessive (bb) plant:
By observing the seed colors of the offspring, you can determine whether the black seed plant was homozygous dominant or heterozygous. If any white seeds appear among the offspring, the black seed plant must be heterozygous (Bb). If no white seeds appear, the black seed plant is likely homozygous dominant (BB).
Therefore, the correct option for crossing to determine the genotype of the black seed plant is: Option B bb
A test cross is used because it can reveal whether the black seed plant carries the recessive b allele. When crossed with a homozygous recessive (bb) plant:
By observing the seed colors of the offspring, you can determine whether the black seed plant was homozygous dominant or heterozygous. If any white seeds appear among the offspring, the black seed plant must be heterozygous (Bb). If no white seeds appear, the black seed plant is likely homozygous dominant (BB).
Therefore, the correct option for crossing to determine the genotype of the black seed plant is: Option B bb
Most Upvoted Answer
In a plant, black seed color (BB/Bb) is dominant over white seed color...
Understanding the Problem
In genetics, seed color in plants can be determined by alleles. In this case, black seed color (B) is dominant over white seed color (b). The goal is to determine the genotype of a black seed plant.
Genotypes Explanation
- BB: Homozygous dominant (black seeds)
- Bb: Heterozygous (black seeds)
- bb: Homozygous recessive (white seeds)
A black-seeded plant can either be BB or Bb, but to identify its exact genotype, a test cross is necessary.
What is a Test Cross?
A test cross involves crossing the organism in question with a homozygous recessive individual (bb). This allows us to observe the offspring's phenotype, which reveals the genotype of the black-seeded parent.
Why Choose bb for the Cross?
- If the black seed plant is BB: All offspring will be black seeds (100% black).
- If the black seed plant is Bb: Offspring will be 50% black seeds and 50% white seeds.
By crossing with a homozygous recessive (bb), the phenotypes of the progeny will indicate the genotype of the black-seeded parent.
Conclusion
To determine the genotype of the black-seeded plant, it must be crossed with a white-seeded plant (bb). This is why option b) bb is the correct answer.
By analyzing the results of this cross, you can confirm whether the black seed plant is BB or Bb based on the seed color of the offspring.
In genetics, seed color in plants can be determined by alleles. In this case, black seed color (B) is dominant over white seed color (b). The goal is to determine the genotype of a black seed plant.
Genotypes Explanation
- BB: Homozygous dominant (black seeds)
- Bb: Heterozygous (black seeds)
- bb: Homozygous recessive (white seeds)
A black-seeded plant can either be BB or Bb, but to identify its exact genotype, a test cross is necessary.
What is a Test Cross?
A test cross involves crossing the organism in question with a homozygous recessive individual (bb). This allows us to observe the offspring's phenotype, which reveals the genotype of the black-seeded parent.
Why Choose bb for the Cross?
- If the black seed plant is BB: All offspring will be black seeds (100% black).
- If the black seed plant is Bb: Offspring will be 50% black seeds and 50% white seeds.
By crossing with a homozygous recessive (bb), the phenotypes of the progeny will indicate the genotype of the black-seeded parent.
Conclusion
To determine the genotype of the black-seeded plant, it must be crossed with a white-seeded plant (bb). This is why option b) bb is the correct answer.
By analyzing the results of this cross, you can confirm whether the black seed plant is BB or Bb based on the seed color of the offspring.
|
Explore Courses for NEET exam
|
|
Top Courses for NEETView all
Question Description
In a plant, black seed color (BB/Bb) is dominant over white seed color (bb). In order to find out the genotype of the black seed plant, with which of the following genotype will you cross it? (NEET 2024)a)BBb)bbc)Bbd)BB/BbCorrect answer is option 'B'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In a plant, black seed color (BB/Bb) is dominant over white seed color (bb). In order to find out the genotype of the black seed plant, with which of the following genotype will you cross it? (NEET 2024)a)BBb)bbc)Bbd)BB/BbCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a plant, black seed color (BB/Bb) is dominant over white seed color (bb). In order to find out the genotype of the black seed plant, with which of the following genotype will you cross it? (NEET 2024)a)BBb)bbc)Bbd)BB/BbCorrect answer is option 'B'. Can you explain this answer?.
In a plant, black seed color (BB/Bb) is dominant over white seed color (bb). In order to find out the genotype of the black seed plant, with which of the following genotype will you cross it? (NEET 2024)a)BBb)bbc)Bbd)BB/BbCorrect answer is option 'B'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In a plant, black seed color (BB/Bb) is dominant over white seed color (bb). In order to find out the genotype of the black seed plant, with which of the following genotype will you cross it? (NEET 2024)a)BBb)bbc)Bbd)BB/BbCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a plant, black seed color (BB/Bb) is dominant over white seed color (bb). In order to find out the genotype of the black seed plant, with which of the following genotype will you cross it? (NEET 2024)a)BBb)bbc)Bbd)BB/BbCorrect answer is option 'B'. Can you explain this answer?.
Solutions for In a plant, black seed color (BB/Bb) is dominant over white seed color (bb). In order to find out the genotype of the black seed plant, with which of the following genotype will you cross it? (NEET 2024)a)BBb)bbc)Bbd)BB/BbCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of In a plant, black seed color (BB/Bb) is dominant over white seed color (bb). In order to find out the genotype of the black seed plant, with which of the following genotype will you cross it? (NEET 2024)a)BBb)bbc)Bbd)BB/BbCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
In a plant, black seed color (BB/Bb) is dominant over white seed color (bb). In order to find out the genotype of the black seed plant, with which of the following genotype will you cross it? (NEET 2024)a)BBb)bbc)Bbd)BB/BbCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for In a plant, black seed color (BB/Bb) is dominant over white seed color (bb). In order to find out the genotype of the black seed plant, with which of the following genotype will you cross it? (NEET 2024)a)BBb)bbc)Bbd)BB/BbCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of In a plant, black seed color (BB/Bb) is dominant over white seed color (bb). In order to find out the genotype of the black seed plant, with which of the following genotype will you cross it? (NEET 2024)a)BBb)bbc)Bbd)BB/BbCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice In a plant, black seed color (BB/Bb) is dominant over white seed color (bb). In order to find out the genotype of the black seed plant, with which of the following genotype will you cross it? (NEET 2024)a)BBb)bbc)Bbd)BB/BbCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice NEET tests.
|
|
Explore Courses for NEET exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup