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Q. No.Which of the following is not a phase of Karyokinesis?
1.
Interkinesis
2.
Prophase
3.
Metaphase
4.
Anaphase
Subtopic: Cell Division: Mitosis (Karyokinesis) |
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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 |
Subtopic: Intro to Cell Cycle & Interphase | Cell Division: Mitosis (Karyokinesis) |
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Which stage of meiotic prophase shows terminalisation of chiasmata as its distincitve feature?
1. Diakinesis
2. Pachytene
3. Leptotene
4. Zygotene
Subtopic: Cell Cycle: Meiosis I |
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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. |
Subtopic: Intro to Cell Cycle & Interphase |
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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 |
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Cycle: Meiosis I |
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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 |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
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Which one of the following occurs during anaphase of mitosis in a healthy human liver cell?
| 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. |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
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Which stage of meiosis can last for months or years in the oocytes of some vertebrates?
1. Leptotene
2. Pachytene
3. Diplotene
4. Diakinesis
1. Leptotene
2. Pachytene
3. Diplotene
4. Diakinesis
Subtopic: Cell Cycle: Meiosis I |
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In meiosis, crossing over and exchange of genetic material between homologous chromosomes are catalyzed by the enzyme.
1. Phosphorylase
2. Recombinase
3. Transferase
4. Polymerase
1. Phosphorylase
2. Recombinase
3. Transferase
4. Polymerase
Subtopic: Cell Cycle: Meiosis I |
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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 |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
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