Q. No.Identify the symbols A, B and C in the figure given below
A
B
C
(1)
G0
Prophase
Cytokinesis
(2)
Prophase
Metaphase
Telophase
(3)
G1
S
G2
(4)
Cytokinesis
Prophase
G0
1. (1)
2. (2)
3. (3)
4. (4)
A
B
C
(1)
G0
Prophase
Cytokinesis
(2)
Prophase
Metaphase
Telophase
(3)
G1
S
G2
(4)
Cytokinesis
Prophase
G0
At anaphase-II, sister chromatids move towards opposite poles of the cell by :
| 1. | Contraction in spindle fibre attached to kinetochores |
| 2. | Shorterning of microtubules attached to kinetochores |
| 3. | Lengthening of microtubules attached to kinetochores |
| 4. | Relaxation in spindle fibre attached to kinetochores |
Following are the events occurs during meiosis :
| (A) | Appearance of chiasmata |
| (B) | Synapsis |
| (C) | Assembly of meiotic spindle |
| (D) | Use of recombinase enzyme |
| 1. | ABCD |
| 2. | BDAC |
| 3. | DCBA |
| 4. | BCAD |
Chromatin condensation and movement of duplicated centriole towards opposite pole can be observed during -
| 1. | Prophase | 2. | Metaphase |
| 3. | Anaphase | 4. | Telophase |
Which phase of mitosis is essentially the reverse of prophase in terms of nuclear changes?
| 1. | S-phase | 2. | Anaphase |
| 3. | Telophase | 4. | Interphase |
The figures below shows 3 phases of mitosis select the option given correct identification together with the correct event ?
| 1. | C- Telophase-Nuclear envelope assembles around the chromosome clusters |
| 2. | B- Anaphase-Segregation of homologous chromosomes. |
| 3. | A- Prophase-Chromosomes get fully condensed. |
| 4. | C- Metaphase-Condensation of chromatin to form chromosome |
Bivalent align on the equator during
| 1. | Metaphase I of meiosis |
| 2. | Anaphase I of meiosis |
| 3. | Metaphase of mitosis |
| 4. | Anaphase of mitosis |
The stage during which chiasmata becomes visible is
| 1. | Pachytene | 2. | Diplotene |
| 3. | Diakinesis | 4. | Zygotene |
In which stage of mitosis, shape of chromosomes is best studied?
1. Prophase
2. Metaphase
3. Interphase
4. Telophase
Reduction in the number of chromosomes occurs during
| 1. | Diplotene |
| 2. | Diakinesis |
| 3. | Metaphase I |
| 4. | Anaphase I |
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