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Which of the following statements is not true of two genes that show 50% recombination frequency?
[NEET 2013]
- a)The genes are tightly linked
- b)The genes show independent assortment
- c)If the genes are present on the same chromosome, they undergo more than one crossovers in every meiosis
- d)The genes may be on different chromosomes
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Which of the following statements is not true of two genes that show 5...
Tightly linked genes show more linkage then crossing over.
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Which of the following statements is not true of two genes that show 5...
Explanation:
Recombination frequency refers to the frequency of crossing over or recombination between two linked genes. If two genes show a recombination frequency of 50%, it means that they are located on the same chromosome, but they are far enough apart from each other that they are likely to undergo at least one crossover event during meiosis.
The correct answer is option A, which states that the genes are tightly linked. This statement is not true because if the genes were tightly linked, they would not show a recombination frequency of 50%. Tightly linked genes are very close to each other on the same chromosome, and they are unlikely to undergo crossing over during meiosis. As a result, their recombination frequency would be close to zero.
The other statements are true of genes that show 50% recombination frequency:
- The genes may be on different chromosomes: This statement is false for genes that show 50% recombination frequency, as they are located on the same chromosome. However, if two genes show a recombination frequency of less than 50%, they may be located on different chromosomes.
- The genes show independent assortment: This statement is true because the genes are located on different parts of the chromosome, and they are likely to undergo crossing over independently of each other.
- If the genes are present on the same chromosome, they undergo more than one crossovers in every meiosis: This statement is also true because the genes are far enough apart that they are likely to undergo at least one crossover during meiosis, and they may undergo more than one crossover if the chromosome undergoes multiple recombination events.
Recombination frequency refers to the frequency of crossing over or recombination between two linked genes. If two genes show a recombination frequency of 50%, it means that they are located on the same chromosome, but they are far enough apart from each other that they are likely to undergo at least one crossover event during meiosis.
The correct answer is option A, which states that the genes are tightly linked. This statement is not true because if the genes were tightly linked, they would not show a recombination frequency of 50%. Tightly linked genes are very close to each other on the same chromosome, and they are unlikely to undergo crossing over during meiosis. As a result, their recombination frequency would be close to zero.
The other statements are true of genes that show 50% recombination frequency:
- The genes may be on different chromosomes: This statement is false for genes that show 50% recombination frequency, as they are located on the same chromosome. However, if two genes show a recombination frequency of less than 50%, they may be located on different chromosomes.
- The genes show independent assortment: This statement is true because the genes are located on different parts of the chromosome, and they are likely to undergo crossing over independently of each other.
- If the genes are present on the same chromosome, they undergo more than one crossovers in every meiosis: This statement is also true because the genes are far enough apart that they are likely to undergo at least one crossover during meiosis, and they may undergo more than one crossover if the chromosome undergoes multiple recombination events.
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Which of the following statements is not true of two genes that show 5...
The genes that are located close to each other on a chromosome are called linked genes. The tendency of the linked genes to be inherited together is called genetic linkage. The genes that are close to each other have a tendency to be more linked than those that are farther. The more the linkage lesser will be the recombination frequency and vice a versa. Hence linkage decreases the frequency of the hybrid. A recombinant frequency of 50 percent means that the genes are present on the same chromosome but are widely separated hence they may have undergone more than one crossovers in every meiosis. They may also be unlinked due to their presence on separate chromosomes. These genes show independent assortment
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Which of the following statements is not true of two genes that show 50% recombination frequency?[NEET 2013]a)The genes are tightly linkedb)The genes show independent assortmentc)If the genes are present on the same chromosome, they undergo more than one crossovers in every meiosisd)The genes may be on different chromosomesCorrect answer is option 'A'. Can you explain this answer?
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Which of the following statements is not true of two genes that show 50% recombination frequency?[NEET 2013]a)The genes are tightly linkedb)The genes show independent assortmentc)If the genes are present on the same chromosome, they undergo more than one crossovers in every meiosisd)The genes may be on different chromosomesCorrect 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 Which of the following statements is not true of two genes that show 50% recombination frequency?[NEET 2013]a)The genes are tightly linkedb)The genes show independent assortmentc)If the genes are present on the same chromosome, they undergo more than one crossovers in every meiosisd)The genes may be on different chromosomesCorrect 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 Which of the following statements is not true of two genes that show 50% recombination frequency?[NEET 2013]a)The genes are tightly linkedb)The genes show independent assortmentc)If the genes are present on the same chromosome, they undergo more than one crossovers in every meiosisd)The genes may be on different chromosomesCorrect answer is option 'A'. Can you explain this answer?.
Which of the following statements is not true of two genes that show 50% recombination frequency?[NEET 2013]a)The genes are tightly linkedb)The genes show independent assortmentc)If the genes are present on the same chromosome, they undergo more than one crossovers in every meiosisd)The genes may be on different chromosomesCorrect 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 Which of the following statements is not true of two genes that show 50% recombination frequency?[NEET 2013]a)The genes are tightly linkedb)The genes show independent assortmentc)If the genes are present on the same chromosome, they undergo more than one crossovers in every meiosisd)The genes may be on different chromosomesCorrect 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 Which of the following statements is not true of two genes that show 50% recombination frequency?[NEET 2013]a)The genes are tightly linkedb)The genes show independent assortmentc)If the genes are present on the same chromosome, they undergo more than one crossovers in every meiosisd)The genes may be on different chromosomesCorrect answer is option 'A'. Can you explain this answer?.
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Which of the following statements is not true of two genes that show 50% recombination frequency?[NEET 2013]a)The genes are tightly linkedb)The genes show independent assortmentc)If the genes are present on the same chromosome, they undergo more than one crossovers in every meiosisd)The genes may be on different chromosomesCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Which of the following statements is not true of two genes that show 50% recombination frequency?[NEET 2013]a)The genes are tightly linkedb)The genes show independent assortmentc)If the genes are present on the same chromosome, they undergo more than one crossovers in every meiosisd)The genes may be on different chromosomesCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Which of the following statements is not true of two genes that show 50% recombination frequency?[NEET 2013]a)The genes are tightly linkedb)The genes show independent assortmentc)If the genes are present on the same chromosome, they undergo more than one crossovers in every meiosisd)The genes may be on different chromosomesCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
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