Most of the organelle duplication occurs during which
phase?
1. G1
2. G2
3. S
4. M
It begins with the simultaneous splitting of the
centromere of each chromosome, is true for which stage
of Cell division.
1. Anaphase-I
2. Anaphase-II
3. Anaphase
4. More than one
Which of the following is not related to formation of
bivalent?
| 1. | Synapsis | 2. | Recombinase |
| 3. | Zygotene | 4. | Synaptonemal complex |
In G phase of cell cycle
| 1. | RNA synthesis stops. |
| 2. | DNA replicates. |
| 3. | Deoxyribonucleotide synthesis begins. |
| 4. | Tubulin protein synthesis takes place. |
Alignment of bivalent chromosomes on the equatorial
plate and splitting of centromeres occur respectively
in which of the following stages of cell division?
| 1. | Anaphase I and anaphase II. |
| 2. | Metaphase II and anaphase I. |
| 3. | Metaphase I and anaphase II. |
| 4. | Pachytene and telophase I. |
Crossing over takes place between which chromatids and in which stage of the cell cycle?
| 1. | Non-sister chromatids of non-homologous chromosomes at Zygotene stage of prophase I. |
| 2. | Non-sister chromatids of homologous chromosomes at Pachytene stage of prophase I. |
| 3. | Non-sister chromatids of homologous chromosomes at Zygotene stage of prophase I. |
| 4. | Non-sister chromatids of non-homologous chromosomes at Pachytene stage of prophase I. |
During mitosis, endoplasmic reticulum and nucleolus begin to disappear at:
| 1. | Late metaphase | 2. | Early prophase |
| 3. | Late prophase | 4. | Early metaphase |
Each pole receives half the chromosome number of the
parent cell, is true for which stage?
1. Anaphase - II
2. Anaphase - I
3. Telophase-I
4. Telophase-II
Crossing over occurs just prior to
1. Pachytene
2. Diplotene
3. Diakinesis
4. Zygotene
Match the Column I with Column II –
|
|
Column-I |
|
Column-II |
|
1. |
Terminalization of chiasmata |
A. |
Zygotene |
|
2. |
Synapsis |
B. |
Diplotene |
|
3. |
Crossing over |
C. |
Metaphase I |
|
4. |
Dissolution of synaptonemal complex |
D. |
Diakinesis |
|
5. |
Best stage for the study of chiasmata |
E. |
Pachytene |
|
6. |
Nuclear membrane and nucleolus disappear |
|
|
|
7. |
Tetrads are arranged on equatorial line |
|
|
1. A – 2, B – 4,5, C – 7, D – 1,6, E – 3
2. A – 2, B – 3, C – 7, D – 1, 4, 6, E – 5
3. A – 2, B – 7, C – 3, D – 1, 4, 5, E – 6
4. A – 2, B – 1, C – 4, D – 5, 3, E – 6