Which of the following is not a phase of Karyokinesis?
| 1. | Interkinesis | 2. | Prophase |
| 3. | Metaphase | 4. | Anaphase |
The above graph shows the change in DNA content during various phases (A to D) in a typical mitotic cell cycle. Identify the phases:
|
A |
B |
C |
D |
|
|
1. |
G2 |
G1 |
S |
M |
|
2. |
G |
S |
G2 |
M |
|
3. |
G1 |
S |
G2 |
M |
|
4. |
M |
G1 |
S |
G2 |
Which stage of meiotic prophase shows terminalisation of chiasmata as its distincitve feature?
1. Diakinesis
2. Pachytene
3. Leptotene
4. Zygotene
Identify the correct statement with regard to phase (Gap 1) of interphase:
| 1. | The reorganisation of all cell components takes place. |
| 2. | The cell is metabolically active, grows but does not replicate its DNA |
| 3. | Nuclear Division takes place |
| 4. | DNA synthesis or replication takes place. |
Prophase of the mitotic division is
| 1. | Longer and more complex than prophase-l of meiosis |
| 2. | Shorter and less complex than prophase-l of meiosis |
| 3. | Longer and less complex than prophase-l of meiosis |
| 4. | Shorter and more complex than prophase-l of meiosis |
All are the significance of mitosis, except
| 1. | Production of daughter cells with identical genetic complement |
| 2. | Restoration of nucleocytoplasmic ratio |
| 3. | Plays important role in evolution by inducing variations |
| 4. | Responsible for growth of multicellular organisms |
| 1. | Chromatin condenses so that the chromosomes are visible under the microscope. |
| 2. | Centrioles migrate to opposite poles of the cell and help to assemble the spindle fibres. |
| 3. | DNA replicates so that each chromosome is made up of two sister chromatids. |
| 4. | Sister chromatids are pulled by the spindle fibres towards opposite poles of the cell. |
Spindle fibres attach on to
| 1. | kinetochore of the chromosome |
| 2. | centromere of the chromosome |
| 3. | kinetosome of the chromosome |
| 4. | telomere of the chromosome |