- 1(current)
Q. No.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 |
Match the following Column-I with Column-II.
| Column-I | Column-II | ||
| A. | Synapsis aligns homologous chromosomes |
(i) | Anaphase II |
| B. | Synthesis of RNA and protein | (ii) | Zygotene |
| C. | Action of enzyme recombinase | (iii) | G2 - phase |
| D. | Centromeres do not separate, but chromosomes move towards opposite poles | (iv) | Anaphase I |
| (v) | Pachytene |
| 1. | A-(ii), B-(i), C-(iii), D-(iv) | 2. | A-(ii), B-(iii), C-(v), D-(iv) |
| 3. | A-(i), B-(ii), C-(v), D-(iv) | 4. | A-(ii), B-(iii), C-(iv), D-(v) |
A somatic cell that has just completed the S-phase of its cell cycle, as compared to a gamete of the same species has:
| 1. | twice the number of chromosomes and twice the amount of DNA |
| 2. | the same number of chromosomes but twice the amount of DNA |
| 3. | twice the number of chromosomes and four times the amount of DNA |
| 4. | four times the number of chromosomes and twice the amount of DNA |
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
| 1. | Zygotene | 2. | Pachytene |
| 3. | Diplotene | 4. | Leptotene |
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
Synapsis occurs between:
| 1. | a male and a female gamete |
| 2. | mRNA and ribosomes |
| 3. | spindle fibres and centromere |
| 4. | two homologous chromosomes |
- 1(current)
Q. No.
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