Beads on string like structures of A are seen in B, which further condense to form chromosomes in C stage of cell division.
| A | B | C | |
| 1. | Chromonema | Chromatin | Metaphase |
| 2. | Chromatin | Chromatid | Metaphase |
| 3. | Chromonema | Chromosome | Anaphase |
| 4. | Chromonema | Chromatid | Anaphase |
Which is the longest phase of the cell cycle?
| 1. | M-phase | 2. | Interphase |
| 3. | Leptotene | 4. | S-phase |
The checkpoint in cell cycle plays important role in
| 1. | repairing DNA damage |
| 2. | apoptosis initiation |
| 3. | assessing DNA damage |
| 4. | none of these. |
Identify the correct matched pair.
| 1. | Segregation-Metaphase ll |
| 2. | Significance of meiosis-production of genetically similar cells |
| 3. | Exchange of genetic material- DIakinesis |
| 4. | Anaphase ll of meiosis-Centromeric division |
The mandatory combination responsible for assembly of microtubules are
1. and
2. and
3. and
4. and
The exchange of segments of non-sister chromatids between chromosomes of a homologous pair termed as
1. transformation
2. translocation
3. crossing over
4. chromosomal aberration
Calcium dependent Kinases can control
| 1. | cell cycle activities |
| 2. | DNA replication |
| 3. | Cell surface receptors |
| 4. | membrane structure |
What is the correct sequence of the steps given here ? Also work out the process depicted in the steps.
| i. | Homologous chromosomes move toward opposite poles of the cell; chromatids do not separate |
| ii. | Chromosomes gather together at the two poles of the cell and the nucleare membranes reform |
| iii. | Homologous chromosomes pair and exchange segments |
| iv. | Homologous chromosomes align on a central plate |
| v. | The haploid cells separate completely |
| 1. | The correct sequence is III → IV → I → II → V and the process is meiosis-I |
| 2. | The correct sequence is II → I → V → IV → III and the process is mitosis |
| 3. | The correct sequence is IV → I → III → II → V and the process is meiosis-I |
| 4. | the correct sequence is II → V → IV → I → II and the process is mitosis |
During meiosis, the sister chromatids separate during:
1. Anaphase II
2. Anaphase I
3. The S phase
4. Synapsis
Chromosomes decondense into diffuse chromatin:
1. At the end of telophase
2. At the beginning of prophase
3. At the end of interphase
4. At the end of metaphase