At which stage of the cell cycle does DNA replication occur:
1. G1 - phase
2. S - phase
3. G2 - phase
4. M - phase
In the somatic cell cycle:
1. | DNA replication takes place in S-phase |
2. | A short interphase is followed by a long mitotic phase |
3. | \(G_2\) phase follows the mitotic phase |
4. | In the \(G_1\) phase, DNA content is double the amount of DNA present in the original cell |
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 |
List-I (Cell Cycle) | List-II (Events) | ||
A. | \(G_1\) phase | I. | Cell is metabolically active but no proliferation until required |
B. | S phase | II. | Replication of DNA |
C. | \(G_0\) stage | III. | Synthesis of proteins |
D. | \(G_2\) phase | IV. | Cell is metabolically active and grows continuously |
1. | G2 Phase | 2. | M phase |
3. | S phase | 4. | G1 phase |
List I | List II | ||
A. | M Phase | I. | Proteins are synthesized |
B. | G2 Phase | II. | Inactive phase |
C. | Quiescent stage | III. | Interval between mitosis and initiation of DNA replication |
D. | G1 Phase | IV. | Equational division |
Choose the correct answer from the options given below:
Options: | A | B | C | D |
1. | II | IV | I | III |
2. | III | II | IV | I |
3. | IV | II | I | III |
4. | IV | I | II | III |
The centriole undergoes duplication during:
1. | Metaphase | 2. | G2 phase |
3. | S-phase | 4. | Prophase |
The fruit fly has 8 chromosomes (2n) in each cell. During the interphase of mitosis, if the number of chromosomes at G1 phase is 8, what would be the number of chromosomes after the S phase?
1. 4
2. 32
3. 8
4. 16
Identify the correct statement with regard to phase (Gap 1) of interphase:
1. | The reorganisation of all cell components takes place. |
2. | The cell is metabolically active and grows but does not replicate its DNA |
3. | Nuclear division takes place |
4. | DNA synthesis or replication takes place. |