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Four different steps that occur during meiosis are given in the following list.
(i) Complete separation of chromatids
(ii) Pairing of homologous chromosomes
(iii) Lining up of paired chromosomes on equator
(iv) Crossing over between chromatids
Select the correct sequential arrangement of the steps.
(i) Complete separation of chromatids
(ii) Pairing of homologous chromosomes
(iii) Lining up of paired chromosomes on equator
(iv) Crossing over between chromatids
Select the correct sequential arrangement of the steps.
- a)(ii), (iii), (iv), (i)
- b)(iii), (ii), (iv), (i)
- c)(ii), (iv), (iii), (i)
- d)(iii), (i), (ii), (iv)
Correct answer is option 'C'. Can you explain this answer?
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Four different steps that occur during meiosis are given in the follow...
Pairing of homologous chromosomes occurs in zygotene and crossing over occurs in pachytene stage of prophase I of meiosis I. Paired chromosomes line up on equator in metaphase I. Then there is complete separation of chromatids in anaphase I of meiosis I.
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Four different steps that occur during meiosis are given in the follow...
Explanation:
During meiosis, a specialized type of cell division that occurs in the reproductive cells, four different steps take place in a specific sequence. The correct sequential arrangement of these steps is option C: (ii), (iv), (iii), (i).
Step 1: Pairing of homologous chromosomes (ii)
During meiosis, the homologous chromosomes, which are two copies of each chromosome, come together and pair up. This process is known as synapsis and occurs during a specific stage called prophase I. The pairing of homologous chromosomes allows for the exchange of genetic material between them, leading to genetic variation.
Step 2: Crossing over between chromatids (iv)
Crossing over occurs during prophase I of meiosis. It is the exchange of genetic material between the non-sister chromatids of homologous chromosomes. This process results in the recombination of genetic material and further contributes to genetic diversity. Crossing over takes place at specific regions called chiasmata, where the chromatids are physically connected.
Step 3: Lining up of paired chromosomes on the equator (iii)
After crossing over, the paired homologous chromosomes align themselves along the equatorial plane of the cell. This alignment occurs during metaphase I of meiosis. The spindle fibers attach to the centromeres of the homologous chromosomes, ensuring their proper alignment.
Step 4: Complete separation of chromatids (i)
During anaphase I of meiosis, the paired homologous chromosomes separate from each other and move towards opposite poles of the cell. This separation is facilitated by the action of the spindle fibers, which pull the chromosomes apart. As a result, each daughter cell receives only one copy of each homologous chromosome.
Overall, the correct sequential arrangement of the steps during meiosis is (ii), (iv), (iii), (i). It is important to note that this sequence occurs during meiosis I, whereas meiosis II follows a similar sequence but involves the separation of sister chromatids.
During meiosis, a specialized type of cell division that occurs in the reproductive cells, four different steps take place in a specific sequence. The correct sequential arrangement of these steps is option C: (ii), (iv), (iii), (i).
Step 1: Pairing of homologous chromosomes (ii)
During meiosis, the homologous chromosomes, which are two copies of each chromosome, come together and pair up. This process is known as synapsis and occurs during a specific stage called prophase I. The pairing of homologous chromosomes allows for the exchange of genetic material between them, leading to genetic variation.
Step 2: Crossing over between chromatids (iv)
Crossing over occurs during prophase I of meiosis. It is the exchange of genetic material between the non-sister chromatids of homologous chromosomes. This process results in the recombination of genetic material and further contributes to genetic diversity. Crossing over takes place at specific regions called chiasmata, where the chromatids are physically connected.
Step 3: Lining up of paired chromosomes on the equator (iii)
After crossing over, the paired homologous chromosomes align themselves along the equatorial plane of the cell. This alignment occurs during metaphase I of meiosis. The spindle fibers attach to the centromeres of the homologous chromosomes, ensuring their proper alignment.
Step 4: Complete separation of chromatids (i)
During anaphase I of meiosis, the paired homologous chromosomes separate from each other and move towards opposite poles of the cell. This separation is facilitated by the action of the spindle fibers, which pull the chromosomes apart. As a result, each daughter cell receives only one copy of each homologous chromosome.
Overall, the correct sequential arrangement of the steps during meiosis is (ii), (iv), (iii), (i). It is important to note that this sequence occurs during meiosis I, whereas meiosis II follows a similar sequence but involves the separation of sister chromatids.
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Four different steps that occur during meiosis are given in the following list.(i)Complete separation of chromatids(ii)Pairing of homologous chromosomes(iii)Lining up of paired chromosomes on equator(iv)Crossing over between chromatidsSelect the correct sequential arrangement of the steps.a)(ii), (iii), (iv), (i)b)(iii), (ii), (iv), (i)c)(ii), (iv), (iii), (i)d)(iii), (i), (ii), (iv)Correct answer is option 'C'. Can you explain this answer?
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Four different steps that occur during meiosis are given in the following list.(i)Complete separation of chromatids(ii)Pairing of homologous chromosomes(iii)Lining up of paired chromosomes on equator(iv)Crossing over between chromatidsSelect the correct sequential arrangement of the steps.a)(ii), (iii), (iv), (i)b)(iii), (ii), (iv), (i)c)(ii), (iv), (iii), (i)d)(iii), (i), (ii), (iv)Correct answer is option 'C'. 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 Four different steps that occur during meiosis are given in the following list.(i)Complete separation of chromatids(ii)Pairing of homologous chromosomes(iii)Lining up of paired chromosomes on equator(iv)Crossing over between chromatidsSelect the correct sequential arrangement of the steps.a)(ii), (iii), (iv), (i)b)(iii), (ii), (iv), (i)c)(ii), (iv), (iii), (i)d)(iii), (i), (ii), (iv)Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Four different steps that occur during meiosis are given in the following list.(i)Complete separation of chromatids(ii)Pairing of homologous chromosomes(iii)Lining up of paired chromosomes on equator(iv)Crossing over between chromatidsSelect the correct sequential arrangement of the steps.a)(ii), (iii), (iv), (i)b)(iii), (ii), (iv), (i)c)(ii), (iv), (iii), (i)d)(iii), (i), (ii), (iv)Correct answer is option 'C'. Can you explain this answer?.
Four different steps that occur during meiosis are given in the following list.(i)Complete separation of chromatids(ii)Pairing of homologous chromosomes(iii)Lining up of paired chromosomes on equator(iv)Crossing over between chromatidsSelect the correct sequential arrangement of the steps.a)(ii), (iii), (iv), (i)b)(iii), (ii), (iv), (i)c)(ii), (iv), (iii), (i)d)(iii), (i), (ii), (iv)Correct answer is option 'C'. 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 Four different steps that occur during meiosis are given in the following list.(i)Complete separation of chromatids(ii)Pairing of homologous chromosomes(iii)Lining up of paired chromosomes on equator(iv)Crossing over between chromatidsSelect the correct sequential arrangement of the steps.a)(ii), (iii), (iv), (i)b)(iii), (ii), (iv), (i)c)(ii), (iv), (iii), (i)d)(iii), (i), (ii), (iv)Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Four different steps that occur during meiosis are given in the following list.(i)Complete separation of chromatids(ii)Pairing of homologous chromosomes(iii)Lining up of paired chromosomes on equator(iv)Crossing over between chromatidsSelect the correct sequential arrangement of the steps.a)(ii), (iii), (iv), (i)b)(iii), (ii), (iv), (i)c)(ii), (iv), (iii), (i)d)(iii), (i), (ii), (iv)Correct answer is option 'C'. Can you explain this answer?.
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