Q. No.During which phase(s) of the cell cycle, amount of DNA in a cell remains at 4 C level if the initial amount is denoted as 2C:
1.
G0 and G1
2.
G1 and S
3.
Only G2
4.
G2 and M
A stage in cell division is shown in the figure. Select the answer which gives the correct identification of the stage with its characteristics:
|
1. |
Late anaphase |
Chromosomes move away from the equatorial plate, Golgi complex not present |
|
2. |
Cytokinesis |
Cell plate formed, mitochondria distributed between two daughter cells |
|
3. |
Telophase |
Endoplasmic reticulum and nucleolus not reformed yet |
|
4. |
Telophase |
Nuclear envelop reforms, Golgi complex reforms |
In the 'S' phase of the cell cycle:
| 1. | amount of DNA doubles in each cell. |
| 2. | amount of DNA remains the same in each cell |
| 3. | chromosome number is increased |
| 4. | amount of DNA is reduced to half in each cell. |
The enzyme recombinase is required at which stage of meiosis:
| 1. | Pachytene | 2. | Zygotene |
| 3. | Diplotene | 4. | Diakinesis |
The complex formed by a pair of synapsed homologous chromosomes is called:
1. Kinetochore
2. Bivalent
3. Axoneme
4. Equatorial plate
During gamete formation, the enzyme recombinase participates during:
1. Metaphase-I
2. Anaphase-II
3. Prophase-I
4. Prophase-II
| 1. | Chromatids start moving towards opposite poles in telophase. |
| 2. | Golgi complex and endoplasmic reticulum are still visible at the end of prophase. |
| 3. | Chromosomes move to the spindle equator and get aligned along the equatorial plate in metaphase. |
| 4. | Chromatids separate but remain in the center of the cell in anaphase. |
During mitosis ER and nucleolus begin to disappear at:
| 1. | late prophase |
| 2. | early metaphase |
| 3. | late metaphase |
| 4. | early prophase |
Which stages of cell division do the following figures A and B represent respectively?
| 1. | Metaphase- Telophase | 2. | Telophase- Metaphase |
| 3. | Late anaphase- Prophase | 4. | Prophase- Anaphase |
Given below is a schematic break-up of the phases/stages of cell cycle-
Which one of the following is the correct indication of the stage/phase in the cell cycle?
| 1. | B-Metaphase | 2. | C-Karyokinesis |
| 3. | D-Synthetic phase | 4. | A-Cytokinesis |
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