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प्रश्न
Distinguish cytokinesis from karyokinesis.
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उत्तर
| Cytokinesis | Karyokinesis | |
| 1 | Cytokinesis is the division of the cytoplasm of cell. | Karyokinesis is the division of the nucleus of a cell. |
| 2 | It occur at the end of M-phase, after the neculear division is over. | It occur during M-Phase of cell cycle before cytokinesis begin to proceed. |
| 3 | Stages such as prophase, metaphase, anaphase, and telophase are not present in cytokinesis. | It is divided into four stages: prophase, metaphase, anaphase, and telophase |
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संबंधित प्रश्न
What is the average cell cycle span for a mammalian cell?
Name the phase of the cell cycle at which the following event occurs:
Crossing over between homologous chromosomes takes place.
Analyse the events during every stage of cell cycle and notice how the following two parameters change.
- Number of chromosomes (N) per cell
- Amount of DNA content (C) per cell
Most cytogenic activities occur during
Match List - I with List - II.
| List I | List II | ||
| (a) | S phase | (i) | Proteins are synthesized |
| (b) | G2 phase | (ii) | Inactive phase |
| (c) | Quiescent stage | (iii) | Interval between mitosis and initiation of DNA replication |
| (d) | G1 phase | (iv) | DNA replication |
Choose the correct answer from the options given below.
The fruit fly has 8 chromosomes (2n) in each cell. During the interphase of Mitosis if the number of chromosomes in G1 phase is 8, what would be the number of chromosomes after the S phase?
The centriole undergoes duplication during ______
Cell division cannot be stopped in which phase of the cell cycle?
Mitosis is characterised by ______.
Between a prokaryote and a eukaryote, which cell has a shorter cell division time?
Which tissue of animals and plants exhibits meiosis?
Which part of the human body should one use to demonstrate stages in mitosis?
Label the diagram and also determine the stage at which this structure is visible.
Mitosis results in producing two cells which are similar to each other. What would be the consequence if the following irregularities occur during mitosis?
Duplication of DNA does not occur
Two key events take place, during S phase in animal cells, DNA replication and duplication of centriole. In which parts of the cell do events occur?
Match List I with List II:
| List I | List II |
| A. M Phase | I. Proteins are synthesised |
| B. G Phase | II. Inactive phase |
| C. Quiescent stage | III. Interval between mitosis and initiation of DNA replication |
| D. G, Phase | IV. Equational division |
Choose the correct answer from the options given below:
