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 |
Assertion (A): | At the end of S phase, there is no increase in chromosome number in the cell. |
Reason (R): | During S phase, the amount of DNA per cell doubles. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |
Arrange the following events of meiosis in a correct sequence:
I. Crossing over
II. Synapsis
III. Terminalisation of chiasmata
IV. Disappearance of nucleolus
1. | II, I, IV, III | 2. | II, I, III, IV |
3. | I, II, III, IV | 4. | II, III, IV, I |
1. | Telophase-metaphase-anaphase-prophase; |
2. | Metaphase-telophase-prophase-anaphase; |
3. | Prophase-metaphase-anaphase-telophase; |
4. | Anaphase-metaphase-prophase-telophase |
Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres.
1. Metaphase-II
2. Anaphase-I
3. Anaphase-II
4. Metaphase-I