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Q. No.The cell, undergoing cell division, as shown in the given figure, is at:
1. Early Prophase
2. Transition to Metaphase
3. Anaphase
4. Telophase
Subtopic: Cell Division: Mitosis (Karyokinesis) |
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If a cell had 2N chromosomes and 2C DNA content in G1 phase, what would be the corresponding values at the end of the S phase?
| 1. | 2N, 2C | 2. | 4N, 2C |
| 3. | 2N, 4C | 4. | 4N, 4C |
Subtopic: Intro to Cell Cycle & Interphase |
90%
Level 1: 80%+
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Consider the two statements:
| Statement I: | The interphase represents the phase between two successive M phases and DNA replication takes place in the interphase. |
| Statement II: | The stage between the two meiotic divisions is called interkinesis and there is no replication of DNA during interkinesis. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Intro to Cell Cycle & Interphase |
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Level 2: 60%+
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Match the stage of Prophase I given in Column I with the corresponding event in Column II and select the correct match from the codes given:
Codes:
| Column I | Column II | ||
| A | Zygotene | P | Terminalisation of chiasmata |
| B | Pachytene | Q | Appearance of chiasmata |
| C | Diplotene | R | Crossing over |
| D | Diakinesis | S | Pairing of homologues |
| A | B | C | D | |
| 1. | Q | R | P | S |
| 2. | S | R | Q | P |
| 3. | Q | S | R | P |
| 4. | R | S | P | Q |
Subtopic: Cell Cycle: Meiosis I |
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Level 1: 80%+
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In the 24 hour average duration of cell cycle of a human cell, cell division properly lasts for:
| 1. | only about 1 hour |
| 2. | approximately 90 minutes |
| 3. | between 4 and 5 hours |
| 4. | 95% time of the cell cycle |
Subtopic: Intro to Cell Cycle & Interphase |
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In animal cells, during the S phase:
| I: | DNA replication begins in the cytoplasm |
| II: | The centriole duplicates in the nucleus |
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect |
Subtopic: Intro to Cell Cycle & Interphase | Cell Division: Mitosis (Karyokinesis) |
66%
Level 2: 60%+
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Consider the two statements:
| Statement I: | Mitosis helps in restoration of nuclear cytoplasmic ratio for effective working of a cell. |
| Statement II: | Mitosis leads to formation of genetically diverse cells leading to generation of variations. |
| 1. | Statement I is correct; Statement II is incorrect |
| 2. | Statement I is correct; Statement II is correct |
| 3. | Statement II is incorrect; Statement I is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
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A cell has 2 pg DNA at G1 phase. What would be the amount of DNA in this cell at the end of anaphase I of meiosis I?
1. 2 pg
2. 4 pg
3. 6 pg
4. 8 pg
1. 2 pg
2. 4 pg
3. 6 pg
4. 8 pg
Subtopic: Intro to Cell Cycle & Interphase |
65%
Level 2: 60%+
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During diakinesis of prophase I:
The correct statements are:
| I: | Terminalisation of chiasmata takes place. |
| II: | Meiotic spindle is assembled. |
| III: | Nucleolus disappears and the nuclear membrane breaks down. |
| 1. | I, II and III | 2. | I and II only |
| 3. | I and III only | 4. | II and III only |
Subtopic: Cell Cycle: Meiosis I |
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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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