Q. No.In G1 phase, a cell has 2N chromosome content and 2C DNA content. The chromosome and DNA content at the end of S phase in this cell would be:
1. 1N; 1C
2. 2N; 2C
3. 2N; 4C
4. 4N; 4C
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Large protein complexes on the synaptonemal complex between two synapsed homologous chromosomes are called as:
| 1. | Kinetochore | 2. | Chiasmata |
| 3. | Recombination nodules | 4. | Telomeres |
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The components of nuclear envelope are dismantled during:
1. prophase and reconstructed during telophase
2. prophase and reconstructed during anaphase
3. metaphase and reconstructed during telophase
4. metaphase and reconstructed during anaphase
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The cell shown in the diagram is most likely at:
| 1. | Metaphase I | 2. | Metaphase II |
| 3. | Anaphase I | 4. | Anaphase II |
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Consider the given two statements:
I. Most adult neuronal cells in humans reside in a terminal G0 phase.
II. The adult neuronal cells are not very active metabolically and are not differentiated to a higher degree.
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 and II is incorrect
4. Both I and II are incorrect
What stage of the cell division is shown in the following diagram of a cell undergoing cell division?
| 1. | Prophase I | 2. | Prophase II |
| 3. | Telophase I | 4. | Telophase II |
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Consider the following two statements:
| I: | Plant cells undergo cytokinesis in a different manner than the animal cells. |
| II: | Plant cells are enclosed by a relatively inextensible cell wall. |
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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During diakinesis of prophase I:
I. Terminalisation of chiasmata takes place.
II. Meiotic spindle is assembled.
III. Nucleolus disappears and the nuclear membrane breaks down.
The correct statements are:
| 1. | I, II and III | 2. | I and II only |
| 3. | I and III only | 4. | II and III only |
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Consider the following key events:
| I: | Chromosomes cluster at opposite spindle poles and their identity is lost as discrete elements. |
| II: | Nucleolus, Golgi complex and ER reform. |
The stage of mitosis characterized by these key events is:
| 1. | Prophase | 2. | Metaphase |
| 3. | Anaphase | 4. | Telophase |
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