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The exchange of genetic material between chromatids of paired homologous chromosomes during first meiotic division is called
[1996]
- a)transformation
- b)chiasmata
- c)crossing over
- d)synapsis
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The exchange of genetic material between chromatids of paired homologo...
The points of attachment between homologous chromosomes after their separation in diplotene are called chiasmata. The process of pairing of homologous chromosomes is called synapsis the phenomenon by which DNA isolated from one type of cell, when introduced into another type, is able to bestow some of the properties of the former to the latter is known as transformation.
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The exchange of genetic material between chromatids of paired homologo...
Understanding Crossing Over
Crossing over is a crucial process during meiosis, specifically in the first meiotic division. This mechanism contributes to genetic diversity in sexually reproducing organisms.
What is Crossing Over?
- Crossing over refers to the exchange of genetic material between homologous chromosomes.
- This occurs during prophase I of meiosis when homologous chromosomes pair up and form structures known as tetrads.
Mechanism of Crossing Over
- As homologous chromosomes align closely, sections of chromatids can break and reattach to the corresponding chromatid of the homologous chromosome.
- This process results in new combinations of alleles on the chromatids.
Significance of Crossing Over
- Increases genetic variation: By creating new allele combinations, crossing over enhances genetic diversity in offspring.
- Essential for evolution: This genetic variability is crucial for natural selection and adaptation over generations.
Comparison with Other Terms
- Transformation: Involves the uptake of foreign DNA by a cell and is not related to meiosis.
- Chiasmata: The physical manifestations of crossing over where the chromatids are held together during the exchange process, but it is not the process itself.
- Synapsis: The pairing of homologous chromosomes during meiosis but does not refer to the genetic exchange.
In conclusion, crossing over (option 'C') is the correct term for the exchange of genetic material between chromatids during meiosis, making it a fundamental aspect of genetic diversity in organisms.
Crossing over is a crucial process during meiosis, specifically in the first meiotic division. This mechanism contributes to genetic diversity in sexually reproducing organisms.
What is Crossing Over?
- Crossing over refers to the exchange of genetic material between homologous chromosomes.
- This occurs during prophase I of meiosis when homologous chromosomes pair up and form structures known as tetrads.
Mechanism of Crossing Over
- As homologous chromosomes align closely, sections of chromatids can break and reattach to the corresponding chromatid of the homologous chromosome.
- This process results in new combinations of alleles on the chromatids.
Significance of Crossing Over
- Increases genetic variation: By creating new allele combinations, crossing over enhances genetic diversity in offspring.
- Essential for evolution: This genetic variability is crucial for natural selection and adaptation over generations.
Comparison with Other Terms
- Transformation: Involves the uptake of foreign DNA by a cell and is not related to meiosis.
- Chiasmata: The physical manifestations of crossing over where the chromatids are held together during the exchange process, but it is not the process itself.
- Synapsis: The pairing of homologous chromosomes during meiosis but does not refer to the genetic exchange.
In conclusion, crossing over (option 'C') is the correct term for the exchange of genetic material between chromatids during meiosis, making it a fundamental aspect of genetic diversity in organisms.
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The exchange of genetic material between chromatids of paired homologous chromosomes during first meiotic division is called[1996]a)transformationb)chiasmatac)crossing overd)synapsisCorrect answer is option 'C'. 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 The exchange of genetic material between chromatids of paired homologous chromosomes during first meiotic division is called[1996]a)transformationb)chiasmatac)crossing overd)synapsisCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The exchange of genetic material between chromatids of paired homologous chromosomes during first meiotic division is called[1996]a)transformationb)chiasmatac)crossing overd)synapsisCorrect answer is option 'C'. Can you explain this answer?.
The exchange of genetic material between chromatids of paired homologous chromosomes during first meiotic division is called[1996]a)transformationb)chiasmatac)crossing overd)synapsisCorrect answer is option 'C'. 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 The exchange of genetic material between chromatids of paired homologous chromosomes during first meiotic division is called[1996]a)transformationb)chiasmatac)crossing overd)synapsisCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The exchange of genetic material between chromatids of paired homologous chromosomes during first meiotic division is called[1996]a)transformationb)chiasmatac)crossing overd)synapsisCorrect answer is option 'C'. Can you explain this answer?.
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