Q. No.In meiosis, DNA replication occurs:
1. Only once before Meiosis I
2. Only once before Meiosis II
3. Twice, once before meiosis I and once during interkinesis
4. Twice, once before meiosis I and once during anaphase I of meiosis I
1. Only once before Meiosis I
2. Only once before Meiosis II
3. Twice, once before meiosis I and once during interkinesis
4. Twice, once before meiosis I and once during anaphase I of meiosis I
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When a cell is preparing for mitosis, it is said to be in which phase of the cell cycle?
| 1. | G1 | 2. | G0 |
| 3. | S | 4. | G2 |
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The figure shows a dividing cell at:
 |
|
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Which of the following does not occur during meiosis?
1. Pairing of homologous chromosomes
2. Exchange of segments between non sister chromatids of homologous chromosomes
3. DNA replication in interkinesis
4. Reduction in chromosome number
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In fruit flies, which have 4 chromosome pairs, the number of possible arrangements of chromosomes in resultant haploid cells at the end of meiosis II is:
| 1. | 2 | 2. | 8 |
| 3. | 16 | 4. | 64 |
In G1 phase, a meiocyte has 2N chromosome content and 2C DNA content. The chromosome and DNA content in each cell at the end of first meiotic division would be:
| 1. | 1N; 1C | 2. | 1N; 2C |
| 3. | 2N; 4C | 4. | 2N; 2C |
Consider the given two statements:
I. The kinetochore is essential for the chromosome segregation that is classically associated with mitosis and meiosis.
II. The kinetochore assembles on the centromere and links the chromosome to microtubule polymers from the mitotic spindle during mitosis and meiosis.
1. Both I and II are correct and II explains I
2. Both I and are correct but II does not explain I
3. I is correct and II is incorrect
4. Both I and II are incorrect
Consider the following events:
I. Centromere split and chromatids separate
II. Chromatids move to opposite poles
The stage of mitosis characterized by these two events is:
| 1. | Prophase | 2. | Metaphase |
| 3. | Anaphase | 4. | Telophase |
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Cells 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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Consider the following two statements:
| I: | The growth of multi-cellular organisms is due to mitosis. |
| II: | Mitosis results in the production of diploid daughter cells with identical genetic complement usually. |
Of the two statements:
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
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