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Q. No.Bivalent or Tetrad formation is a characteristic feature observed during :
1.
Synaptonemal complex in the zygotene stage
2.
Chiasmata in the diplotene stage
3.
Synaptonemal complex in the pachytene stage
4.
Chiasmata in the zygotene stage
Subtopic: Cell Cycle: Meiosis I |
69%
Level 2: 60%+
NEET - 2022
Hints
With respect to metaphase, which of the following statements is incorrect ?
| 1. | Complete disintegration of nuclear envelope takes place. |
| 2. | Chromosomes are highly condensed. |
| 3. | Metaphase chromosomes are made up of four sister chromatids held together by centromere. |
| 4. | Chromosomes lie at the equator of the cell. |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
67%
Level 2: 60%+
NEET - 2022
Hints
The event shown in the given diagram takes place during:
| 1. Pachytene of Prophase I | 2. Diplotene of Prophase I |
| 3. Metaphase II | 4. Anaphase II |
Subtopic: Cell Cycle: Meiosis I |
85%
Level 1: 80%+
Hints
A and B in the given diagram are events seen in Meiosis I and C and D are events seen in Meiosis II. Identify the correct match:
| A: | Prophase I and arrow shows chiasmata |
| B: | Anaphase I and arrow shows sister chromatids associated at centromere |
| C: | Prophase II and arrows show attachment of spindle microtubules to kinetochore |
| D: | Anaphase II and the diagram shows separated sister chromatids after the split of centromere |
| 1. | Only A, B and C | 2. | Only A, C and D |
| 3. | Only B, C and D | 4. | A, B, C and D |
Subtopic: Cell Cycle: Meiosis I |
62%
Level 2: 60%+
Hints
The diagram shows cytokinesis in animal cell [I] and in plant cell [II]. What will be correct for A, B and C in these cells?
| Animal cell | Plant cell | |
| A. | Furrow formed using actin and myosin | Vesicles from Golgi move to centre |
| B. | The furrow reaches centre from periphery | Tubular structures merge to form plasma membrane |
| C. | Cells pinched apart | Pectins deposited leading to formation of middle lamella |
| 1. | Only A and B | 2. | Only A and C |
| 3. | Only B and C | 4. | A, B and C |
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
55%
Level 3: 35%-60%
Hints
The given diagram shows a slide with cells labeled as A, B, C and D at different stages of cell division. Identify the correct match:
| A | B | C | D | |
| 1. | Interphase | Telophase | Prophase | Anaphase |
| 2. | Interkinesis | Anaphase | Prophase | Metaphase |
| 3. | Interkinesis | Telophase | Metaphase | Anaphase |
| 4. | Interphase | Prophase | Metaphase | Anaphase |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
66%
Level 2: 60%+
Hints
In a eukaryote, the cell cycle typically is divided into:
| 1. | Two phases | 2. | Three phases |
| 3. | Four phases | 4. | Five phases |
Subtopic: Intro to Cell Cycle & Interphase | Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
74%
Level 2: 60%+
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Please attempt this question first.
In a somatic eukaryotic cell undergoing mitosis, when do expect to find most number of chromosomes in the cell?
| 1. | At the end of the G1 phase |
| 2. | At the end of the S phase |
| 3. | At the end of Anaphase |
| 4. | In the resultant daughter cells |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
61%
Level 2: 60%+
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Hints
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Study the given two statements – an Assertion and Reason, and select the correct answer from the options given:
| Assertion(A): | Meiosis is the mechanism by which conservation of specific chromosome number of each species is achieved across generations in sexually reproducing organisms. |
| Reason(R): | Meiosis increases the genetic variability in the populations of organisms from one generation to the next. |
| 1. | Both (A) and (R) are true and (R) correctly explains (A) |
| 2. | (A) is true but (R) is false |
| 3. | (A) is false but (R) is true. |
| 4. | Both (A) and (R) are true but (R) does not correctly explain (A). |
Subtopic: Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
53%
Level 3: 35%-60%
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In Prophase I of Meiosis I, recombination between homologous chromosomes is completed:
| 1. | by the end of zygotene |
| 2. | by the end of pachytene |
| 3. | at the beginning of diplotene |
| 4. | when terminalisation of chiasmata occurs at diakinesis |
Subtopic: Cell Cycle: Meiosis I |
75%
Level 2: 60%+
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