Spindle fibres attach on to
1.
Kinetochore of the chromosome
2.
centromere of the chromosome
3.
Kinetosome of the chromosome
4.
telomere of the chormosome
Arrange the following events of meiosis in correct sequences
| I. | Crossing Over |
| II. | Synapsis |
| III. | terminalisation of chaismata |
| IV. | Disapperance of nucleolus |
| 1. | II, I, IV, III |
| 2. | II, I, III, IV |
| 3. | I, II, III, IV |
| 4. | II, III, IV, I |
A somatic cell that has just completed the S-phase of its cell cycle, as compared to gamete of the same species has
| 1. | twice the number of chromosomes and twice the amount of DNA |
| 2. | 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 |
During which phase(s) of cell cycle, the amount of DNA in a cell remain at 4C level if the
initial amount is denoted as 2C?
1. G0 and G1
2. G1 and S
3. Only G2
4. G2 and M
In S-phase of the cell cycle
| 1. | amount of DNA doubles in each cell |
| 2. | amount of DNA remains same in each cell |
| 3. | chromosome number is increased |
| 4. | amount of DNA is reduced to half in each cell |
The complex formed by a pair of synapsed homologous chromosomes is called
1. equatorial plate
2. Kinetochore
3. bivalent
4. axoneme
A stage in cell division is shown in the figure. Select the answer which gives correct
identification of the stage with its characteristics.
| 1. | Telophase - Nuclear envelope reforms, Golgi complex reforms |
| 2. | Late anaphase - Chromosomes move away from equatorial plate, Golgi complex not present |
| 3. | Cytokinesis - Cell plate formed, mitochondria distributed between two daughter cells |
| 4. | Telophase - Endoplasmic reticulum and nucleolus not reformed yet |
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 |
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