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Meiosis consists of
- a)Two cell divisions without any DNA replication
- b)Two cell divisions in which chromosome number in reduced to half
- c)Two cell divisions with only two rounds of chromosome replication
- d)A single cell division with chromosome replication
Correct answer is option 'B'. Can you explain this answer?
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Meiosis consists ofa)Two cell divisions without any DNA replicationb)T...
Meiosis is a double division that occurs in the reproductive cell in which nucleus divide but chromosome replicate only once to form four haploid cells, each cell having half the number of chromosomes present in a parent cell. It causes a reduction in the number of chromosomes. It is also known as reduction division. Meiosis in a cell occurs only once to form gametes.
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Meiosis consists ofa)Two cell divisions without any DNA replicationb)T...
Explanation:
Cell Divisions in Meiosis:
- Meiosis consists of two cell divisions, namely Meiosis I and Meiosis II.
- During Meiosis I, homologous chromosomes are separated, reducing the chromosome number to half.
- Meiosis II is similar to mitosis, where sister chromatids are separated.
Chromosome Number Reduction:
- The main purpose of Meiosis is to produce gametes with half the chromosome number of the parent cell.
- This reduction in chromosome number is essential for sexual reproduction to maintain the chromosome number across generations.
Importance of Meiosis:
- Meiosis leads to genetic diversity through processes like crossing over and independent assortment.
- It ensures the variability of offspring by shuffling genetic material during gamete formation.
Comparison with Mitosis:
- In contrast to mitosis, where a single cell division occurs, Meiosis involves two successive divisions.
- Meiosis includes stages like prophase I, metaphase I, anaphase I, telophase I, prophase II, metaphase II, anaphase II, and telophase II.
Conclusion:
- In summary, Meiosis is a crucial process in sexual reproduction that involves two cell divisions, resulting in the reduction of the chromosome number to half. This ensures genetic diversity and the formation of genetically unique gametes.
Cell Divisions in Meiosis:
- Meiosis consists of two cell divisions, namely Meiosis I and Meiosis II.
- During Meiosis I, homologous chromosomes are separated, reducing the chromosome number to half.
- Meiosis II is similar to mitosis, where sister chromatids are separated.
Chromosome Number Reduction:
- The main purpose of Meiosis is to produce gametes with half the chromosome number of the parent cell.
- This reduction in chromosome number is essential for sexual reproduction to maintain the chromosome number across generations.
Importance of Meiosis:
- Meiosis leads to genetic diversity through processes like crossing over and independent assortment.
- It ensures the variability of offspring by shuffling genetic material during gamete formation.
Comparison with Mitosis:
- In contrast to mitosis, where a single cell division occurs, Meiosis involves two successive divisions.
- Meiosis includes stages like prophase I, metaphase I, anaphase I, telophase I, prophase II, metaphase II, anaphase II, and telophase II.
Conclusion:
- In summary, Meiosis is a crucial process in sexual reproduction that involves two cell divisions, resulting in the reduction of the chromosome number to half. This ensures genetic diversity and the formation of genetically unique gametes.
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Meiosis consists ofa)Two cell divisions without any DNA replicationb)Two cell divisions in which chromosome number in reduced to halfc)Two cell divisions with only two rounds of chromosome replicationd)A single cell division with chromosome replicationCorrect answer is option 'B'. Can you explain this answer?
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Meiosis consists ofa)Two cell divisions without any DNA replicationb)Two cell divisions in which chromosome number in reduced to halfc)Two cell divisions with only two rounds of chromosome replicationd)A single cell division with chromosome replicationCorrect 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 Meiosis consists ofa)Two cell divisions without any DNA replicationb)Two cell divisions in which chromosome number in reduced to halfc)Two cell divisions with only two rounds of chromosome replicationd)A single cell division with chromosome replicationCorrect 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 Meiosis consists ofa)Two cell divisions without any DNA replicationb)Two cell divisions in which chromosome number in reduced to halfc)Two cell divisions with only two rounds of chromosome replicationd)A single cell division with chromosome replicationCorrect answer is option 'B'. Can you explain this answer?.
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