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Q. No.The phase of mitosis in which the spindle fibers break apart, two new nuclear membranes begin to form, and the chromosomes disperse into chromatin is
| 1. | metaphase | 2. | telophase |
| 3. | anaphase | 4. | prophase |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIdentify the correct statement regarding meiosis amongst the following:
| I: | Meiosis involves two sequential cycles of nuclear and cell divisions but only a single cycle of DNA replication. |
| II: | Meiosis II is initiated after the parental chromosomes have replicated to produce identical sister chromatids at the S phase. |
| III: | Meiosis involves pairing of bivalents and recombinations between them. |
| 1. | I only | 2. | I and II only |
| 3. | I and III only | 4. | I, II and III |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCells at the end of prophase of mitosis, when viewed under the microscope, do not show:
| I: | Golgi complexes |
| II: | Endoplasmic reticulum |
| III: | Nucleolus |
| IV: | Nuclear envelope |
1. Only I and II are correct
2. Only III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe stage during which separation of the paired homologous chromosomes begins is
| 1. | Pachytene | 2. | Diplotene |
| 3. | Diakinesis | 4. | Zygotene |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe enzyme recombinase is required at which stage of meiosis
1. Pachytene
2. Zygotene
3. Diplotene
4. Diakinesis
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe complex formed by a pair of synapsed homologous chromosomes is called
| 1. | Equatorial plate | 2. | Kinetochore |
| 3. | Bivalent | 4. | Axoneme |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyArrange the following events of meiosis in correct sequence
(a) Crossing over
(b) Synapsis
(c) Terminalisation of chiasmata
(d) Disappearance of nucleolus
| 1. | (b), (c), (d), (a) | 2. | (b), (a), (d), (c) |
| 3. | (b), (a), (c), (d) | 4. | (a), (b), (c), (d) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch the following with respect to meiosis:
| (a) | Zygotene | (i) | Terminalization |
| (b) | Pachytene | (ii) | Chiasmata |
| (c) | Diplotene | (iii) | Crossing over |
| (d) | Diakinesis | (iv) | Synapsis |
Select the correct option from the following:
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (iii) | (ii) | (i) |
| 2. | (i) | (ii) | (iv) | (iii) |
| 3. | (ii) | (iv) | (iii) | (i) |
| 4. | (iii) | (iv) | (i) | (ii) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCrossing over that results in genetic recombination in higher organisms occurs between:-
1. Non-sister chromatids of a bivalent
2. Two daughter nuclei
3. Two different bivalents
4. Sister chromatids of a bivalent
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAmount of cellular DNA increases during:
| 1. | Cytokinesis | 2. | Fertilisation |
| 3. | Mutation | 4. | Respiration |
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