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Q. No.During growth the contents of a nucleus in human body undergo profound changes. How many chromatids does it contain?
1. 96
2. 23
3. 46
4. 92
Subtopic: Intro to Cell Cycle & Interphase |
Level 3: 35%-60%
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In the adult animal, most of the cells appear to exhibit division except
1. Liver cells
2. Spleen cells
3. Blood cells
4. Heart cells
1. Liver cells
2. Spleen cells
3. Blood cells
4. Heart cells
Subtopic: Intro to Cell Cycle & Interphase |
85%
Level 1: 80%+
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Select correct combination of metaphase characteristics.
Choose the correct answer from the options given below:
| A. | Condensation of chromosomes is complete |
| B. | Chromosomes are moved to spindle equator |
| C. | Daughter chromosomes begin their migration towards the opposite poles |
| D. | Spindle fibers attach to kinetochores |
| E. | Chromosome moves away from the equatorial plate |
| 1. | A, B, D only |
| 2. | B, C, D only |
| 3. | E only |
| 4. | B, C, D, E only |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
84%
Level 1: 80%+
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Arrange the following stages of chromosomal behaviour during Prophase-I of meiosis in the correct sequence.
Choose the correct answer from the options given below:
| A. | Appearance of recombination nodules |
| B. | Formation of synaptonemal complex |
| C. | Appearance of chiasmata |
| D. | Terminalisation of chiasmata |
| E. | Beginning of chromosomal compaction |
| 1. | E, B, D, A, C |
| 2. | C, D, A, E, B |
| 3. | E, B, A, C, D |
| 4. | D, B, E, A, C |
Subtopic: Cell Cycle: Meiosis I |
89%
Level 1: 80%+
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Arrange in correct sequence with respect of Meiosis-I
Choose the correct from the options given below
| A. | Crossing over |
| B. | Chiasmata formation |
| C. | Compaction of chromosome |
| D. | Disappearance of nucleolus and breakdown of nuclear envelop |
| E. | Formation of synaptonemal complex |
| 1. | A>B>C>D>E |
| 2. | C>E>A>B>D |
| 3. | D>B>C>E>A |
| 4. | A>D>C>B>E |
Subtopic: Cell Cycle: Meiosis I |
89%
Level 1: 80%+
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Given below are two statements:
In light of the above statements, choose the most appropriate answer from the options given below:
| Statement I: | In mitosis, chromosomal number in the progeny as well as in parents remains the same |
| Statement II: | Mitosis takes place in gametes |
| 1. | Both statement I and statement II are correct |
| 2. | Both statement I and statement II are incorrect |
| 3. | Statement I is correct but statement II is incorrect |
| 4. | Statement I is incorrect but statement II is correct |
Subtopic: Intro to Cell Cycle & Interphase | Cell Division: Mitosis (Karyokinesis) | Cell Cycle: Meiosis I |
Level 3: 35%-60%
Hints
Arrange the steps of cell division in the correct order
Choose the correct answer from the options given below
| A. | Cytokinesis |
| B. | Metaphase |
| C. | Anaphase |
| D. | Telophase |
| E. | Prophase |
| 1. | E, B, C, A, D |
| 2. | A, B, C, D, E |
| 3. | E, B, C, D, A |
| 4. | A, B, C, E, D |
Subtopic: Intro to Cell Cycle & Interphase |
90%
Level 1: 80%+
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Please attempt this question first.
Which stage of meiosis can last for months or years in the oocytes of some vertebrates?
1. Leptotene
2. Pachytene
3. Diplotene
4. Diakinesis
1. Leptotene
2. Pachytene
3. Diplotene
4. Diakinesis
Subtopic: Cell Cycle: Meiosis I |
91%
Level 1: 80%+
NEET - 2022
Hints
In meiosis, crossing over and exchange of genetic material between homologous chromosomes are catalyzed by the enzyme.
1. Phosphorylase
2. Recombinase
3. Transferase
4. Polymerase
1. Phosphorylase
2. Recombinase
3. Transferase
4. Polymerase
Subtopic: Cell Cycle: Meiosis I |
94%
Level 1: 80%+
NEET - 2022
Hints
Identify the correct sequence of events during Prophase I of meiosis:
Choose the correct answer from the options given below:
| a. | Synapsis of homologous chromosomes |
| b. | Chromosomes become gradually visible under a microscope |
| c. | Crossing over between non-sister chromatids of homologous chromosomes |
| d. | Terminalisation of chiasmata |
| e. | Dissolution of synaptonemal complex |
Choose the correct answer from the options given below:
| 1. | (a), (b), (c), (d), (e) | 2. | (b), (c), (d), (e), (a) |
| 3. | (b), (a), (c), (e), (d) | 4. | (a), (c), (d), (e), (b) |
Subtopic: Cell Cycle: Meiosis I |
84%
Level 1: 80%+
NEET - 2022
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