Q. No.The enzyme recombinase is required at which stage of meiosis ?
1.
Pachytene
2.
Zygotene
3.
Diplotene
4.
Diakinesis
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Identify the stage of mitosis shown in the given diagram:
| 1. | Prophase | 2. | Metaphase |
| 3. | Anaphase | 4. | Telophase |
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Identify the correct statements regarding G1 phase of the cell cycle:
| I: | It is the post-mitotic gap phase |
| II: | The cell is metabolically active and grows continuously |
| III: | Cell replicates its DNA |
| 1. | Only II | 2. | I and II only |
| 3. | Only I | 4. | I, II and III |
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What would be the DNA content and chromosome number in a cell at the end of S phase with 2C DNA content and 2N chromosome number in G1?
| 1. | 4C and 4N | 2. | 2C and 4N |
| 3. | 4C and 2N | 4. | 2C and 2N |
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Proteins are synthesized in preparation for mitosis during:
| 1. | G1 phase | 2. | S phase |
| 3. | G2 phase | 4. | M phase |
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The cells in the quiescent stage [G0] phase of the cell cycle:
| 1. | exit from the S phase |
| 2. | continue the events of cell cycle and complete the division |
| 3. | are metabolically active |
| 4. | cannot ever proliferate |
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Mitosis is also called ‘equational division’ because:
| 1. | the number of chromosomes in both daughter cells are the same |
| 2. | the sum of the number of chromosomes in two daughter cells is equal to the number of chromosomes in the parent cell |
| 3. | each progeny cell receives only one set of chromosomes from the parent cell |
| 4. | the number of chromosomes in the parent and the progeny cells is the same |
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The phase of the cell cycle during which DNA replication takes place is:
| 1. | G1 phase | 2. | S phase |
| 3. | G2 phase | 4. | M phase |
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The correct chronology of stages of karyokinesis in mitosis is:
1. Prophase – Anaphase – Metaphase – Telophase
2. Prophase – Metaphase – Anaphase – Telophase
3. Prophase – Metaphase – Telophase – Anaphase
4. Telophase – Anaphase – Metaphase – Prophase
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