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
Given below is the representation of a certain event at a particular stage of a type of cell division. Which is this stage?
1. Prophase-I during meiosis
2. Prophase-II during meiosis
3. Prophase of mitosis
4. Both prophase and metaphase of mitosis
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 |