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Q. No.The phase of the cell cycle in which the cell prepares for mitosis is:
1.
G1 phase
2.
S phase
3.
G2 phase
4.
M phase
Subtopic: Intro to Cell Cycle & Interphase |
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Regarding the diplotene stage of prophase I:
Which of the above statements are correct?
1. Only (i) and (ii) are correct
2. Only (ii) and (iii) are correct
3. Only (i) and (iii) are correct
4. (i), (ii) and (iii) are correct
| (i) | It begins with the dissolution of the synaptonemal complex. |
| (ii) | Homologous chromosomes tend to separate except at the sites of crossing over. |
| (iii) | The recombination nodules become more prominent during diplotene. |
1. Only (i) and (ii) are correct
2. Only (ii) and (iii) are correct
3. Only (i) and (iii) are correct
4. (i), (ii) and (iii) are correct
Subtopic: Cell Cycle: Meiosis I |
51%
From NCERT
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Independent assortment during meiosis produces gametes with all possible combinations of material and paternal chromosomes. With regard to chromosomes, then, a diploid cell with four chromosomes produces how many different kinds of haploid gametes?
1. Two
2. Four
3. Eight
4. Sixteen
1. Two
2. Four
3. Eight
4. Sixteen
Subtopic: Cell Cycle: Meiosis II |
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If there were four chromosomes present during prophase I, how many chromosomes are there in each cell at the end of anaphase II?
1. 2
2. 4
3. 8
4. 16
1. 2
2. 4
3. 8
4. 16
Subtopic: Cell Cycle: Meiosis II |
53%
From NCERT
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A researcher is studying a plant species where the haploid number of chromosomes is 12 (n = 12). How many chromosomes would be visible in each daughter cell during metaphase of meiosis I?
| 1. | 24 | 2. | 6 |
| 3. | 12 | 4. | 18 |
Subtopic: Cell Cycle: Meiosis I |
52%
From NCERT
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Identify the incorrect statement(s):
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | In some lower plants and in some social insects, haploid cells also divide by mitosis. |
| II: | Mitotic divisions in the meristematic tissues – the apical and the lateral cambium, result in a continuous growth of plants throughout their life. |
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Cell Division: Mitosis (Karyokinesis) |
From NCERT
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In plant cells during the S phase,
1. Only A is correct
2. Only B is correct
3. Both A and B are correct
4. Both A and B are incorrect
| A: | DNA replication begins in the nucleus |
| B: | centriole duplicates in the cytoplasm |
2. Only B is correct
3. Both A and B are correct
4. Both A and B are incorrect
Subtopic: Intro to Cell Cycle & Interphase |
From NCERT
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Which of the following does not take place during telophase of mitosis?
| 1. | Chromosomes become discrete. |
| 2. | Nuclear envelope reforms. |
| 3. | Chromosomes cluster at opposite spindle poles. |
| 4. | Nucleolus, endoplasmic reticulum, and Golgi complex reform. |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
60%
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The number of basic phases in the cell cycle of typical eukaryotic cells will be:
1. 2
2. 3
3. 4
4. 5
1. 2
2. 3
3. 4
4. 5
Subtopic: Intro to Cell Cycle & Interphase |
53%
From NCERT
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Consider the given two statements:
| Statement I: | At Metaphase I the chromosomes align at the equator and the microtubules from opposite poles of the spindle get attached to the kinetochores of sister chromatids. |
| Statement II: | At metaphase II the bivalent chromosomes align on the equatorial plate and microtubules from the opposite poles of the spindle attach to the kinetochore of homologous chromosomes. |
| 1. | Statement I is correct and Statement II is incorrect. |
| 2. | Statement I is incorrect and Statement II is incorrect. |
| 3. | Statement I is correct and Statement II is correct. |
| 4. | Statement I is incorrect and Statement II is correct. |
Subtopic: Cell Cycle: Meiosis I |
59%
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