In meiosis crossing over is initiated at
1. Pachytene | 2. Leptotene |
3. Zygotene | 4. Diplotene |
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Which of the following is not a characteristic feature during mitosis in somatic cells?
1. | Spindle fibres | 2. | Disappearance of nucleolus |
3. | Chromosome movement | 4. | Synapsis |
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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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