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Q. No.The onion root tip cell has 16 chromosomes (2n). What would be the number of chromosomes in this cell after the S phase and at the end of mitotic anaphase, respectively?
1. 16 and 16
2. 16 and 32
3. 8 and 16
4. 16 and 8
Subtopic: Intro to Cell Cycle & Interphase |
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Among eukaryotes, replication of DNA takes place in:
| 1. | G2 Phase | 2. | M phase |
| 3. | S phase | 4. | G1 phase |
Subtopic: Intro to Cell Cycle & Interphase |
90%
From NCERT
NEET - 2023
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The process of appearance of recombination nodules occurs at which sub stage of prophase I in meiosis?
| 1. | Diakinesis | 2. | Zygotene |
| 3. | Pachytene | 4. | Diplotene |
Subtopic: Cell Cycle: Meiosis I |
76%
From NCERT
NEET - 2023
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Which of the following stages of meiosis involves division of centromere?
| 1. | Telophase | 2. | Metaphase I |
| 3. | Metaphase II | 4. | Anaphase II |
Subtopic: Cell Cycle: Meiosis II |
80%
From NCERT
NEET - 2023
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Match List I with List II:
| List I | List II | ||
| A. | M Phase | I. | Proteins are synthesized |
| B. | G2 Phase | II. | Inactive phase |
| C. | Quiescent stage | III. | Interval between mitosis and initiation of DNA replication |
| D. | G1 Phase | IV. | Equational division |
Choose the correct answer from the options given below:
| Options: | A | B | C | D |
| 1. | II | IV | I | III |
| 2. | III | II | IV | I |
| 3. | IV | II | I | III |
| 4. | IV | I | II | III |
Subtopic: Intro to Cell Cycle & Interphase |
88%
From NCERT
NEET - 2023
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Select the correct statements.
Choose the correct answer from the options given below:
| A. | Tetrad formation is seen during Leptotene. |
| B. | During Anaphase, the centromeres split and chromatids separate. |
| C. | Terminalization takes place during Pachytene. |
| D. | Nucleolus, Golgi complex and ER are reformed during Telophase. |
| E. | Crossing over takes place between sister chromatids of homologous chromosome. |
Choose the correct answer from the options given below:
| 1. | B and E only | 2. | A and C only |
| 3. | B and D only | 4. | A, C and E only |
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Cycle: Meiosis I |
85%
From NCERT
NEET - 2023
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Given below are two-statements:
In the light of the above statements, choose the most appropriate answer from the options given below:
| Statement I: | During G0 phase of cell cycle, the cell is metabolically inactive. |
| Statement II: | The centrosome undergoes duplication during S phase of interphase. |
In the light of the above statements, choose the most appropriate answer from the options given below:
| 1. | Statement I is incorrect but Statement II is correct. |
| 2. | Both Statement I and Statement II are correct. |
| 3. | Both Statement I and Statement II are incorrect. |
| 4. | Statement I is correct but Statement II is incorrect. |
Subtopic: Intro to Cell Cycle & Interphase |
61%
From NCERT
NEET - 2023
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The dissolution of synaptonemal complex occurs during:
| 1. | Pachytene | 2. | Diplotene |
| 3. | Diakinesis | 4. | Leptotene |
Subtopic: Cell Cycle: Meiosis I |
77%
From NCERT
NEET - 2023
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Doubling of the number of chromosomes can be achieved by disrupting mitotic cell division soon after:
| 1. | Anaphase | 2. | Telophase |
| 3. | Prophase | 4. | Metaphase |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
NEET - 2023
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During which stages of mitosis and meiosis, respectively, does the centromere of each chromosome split?
| 1. | Metaphase, Metaphase II | 2. | Prophase, Telophase I |
| 3. | Telophase, Anaphase I | 4. | Anaphase, Anaphase II |
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Cycle: Meiosis II |
87%
From NCERT
NEET - 2023
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