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Decondensation of chromosomes occurs du...

Decondensation of chromosomes occurs during

A

Prophase

B

Metaphase

C

Anaphase

D

Telophase

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Chromatin Structure**: Chromatin is the thread-like structure found in the nucleus of a cell, composed of DNA and proteins. During the cell cycle, chromatin undergoes changes in its structure. 2. **Stages of Cell Division**: The cell cycle consists of several stages: prophase, metaphase, anaphase, and telophase. Each stage has distinct characteristics regarding the structure of chromosomes. 3. **Prophase and Metaphase**: During prophase, chromatin condenses to form visible chromosomes. This condensation continues into metaphase, where chromosomes are in their most condensed form, lined up at the cell's equator. 4. **Anaphase**: In anaphase, the sister chromatids are pulled apart towards opposite poles of the cell. This stage involves the separation of the chromatids but does not involve decondensation. 5. **Telophase**: After the chromatids have reached the poles, the cell enters telophase. In this stage, the chromosomes begin to decondense back into chromatin. This reversion is crucial for the proper functioning of the daughter cells. 6. **Conclusion**: Therefore, decondensation of chromosomes occurs during telophase, as the chromosomes relax back into their chromatin form, allowing for the reformation of the nuclear envelope and the preparation for cell division. **Final Answer**: Decondensation of chromosomes occurs during telophase. ---
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AAKASH INSTITUTE ENGLISH-CELL CYCLE AND CELL DIVISION -Assignment (SECTION - A ) (Objective type Questions )
  1. The chromosomes cluster at opposite poles and their identity is lost a...

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  2. The mitotic spindle disappears in

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  3. Decondensation of chromosomes occurs during

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  4. The nuclear envelope reassembles during

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  5. phase marks the end of M-phase.

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  6. It karyokinesis is not followed by cytokinesis, then gives rise to

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  7. A single cell containing large number of nuclei is called

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  8. The number of chromosomes is reduced to half during

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  9. In meiosis-I condensation and coiling of chromatin fibres started duri...

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  10. In pachytene, each tetrad contains

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  11. Crossing over occurs between

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  12. The separated homologous chromosomes of a pair move towards opposite p...

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  13. marks the site where crossing over had occurred.

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  14. terminalisation of chiasmata occurs during

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  15. Bivalent chromosomes align themselves at the equator during

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  16. Major check point of cell cycle is

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  17. G(1) to S transition is regulated by

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  18. What will be the total number of mitotic divisions in the formation of...

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  19. If there are 30 chromosomes in G(1) -phase, then what will be number ...

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  20. What will be the amount of DNA in meiosis-II products if meiocyte cont...

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