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Q. No.
Assertion (A):
Tendency of parental combinations to remain together is called crossing over.
Reason(R):
Crossing over provides proof in favour of the linear arrangement of genes on chromosomes.
In the following questions, a statement of assertion (A) is followed by a statement of reason (R).
1.
Both (A) & (R) are True and (R) is the correct explanation of (A).
2.
Both (A) & (R) are True but (R) is not the correct explanation of (A).
3.
(A) is True but (R) is False.
4.
Both (A) and (R) are False.
Subtopic: Cell Cycle: Meiosis I |
55%
Level 3: 35%-60%
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During which phase of mitosis do the chromatids become chromosomes?
| 1. | telophase | 2. | anaphase |
| 3. | prophase | 4. | metaphase |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
Level 3: 35%-60%
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Please attempt this question first.
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
1. 96
2. 23
3. 46
4. 92
Subtopic: Intro to Cell Cycle & Interphase |
Level 3: 35%-60%
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Hints
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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Hints
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%+
Please attempt this question first.
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Please attempt this question first.
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
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