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A cell cycle includes...

A cell cycle includes

A

interphase and M phase

B

prophase, metaphase, anaphase and telophase

C

`G_(1),S` and `G_(2)` phases

D

Karyokinesis and cytokinesis.

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The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Cell Cycle**: The cell cycle is a series of events that take place in a cell leading to its division and replication. It consists of two main phases: Interphase and M phase. 2. **Identifying Interphase**: Interphase is the phase where the cell spends most of its life. It is further divided into three sub-phases: - **G1 Phase (Gap 1)**: The cell grows and synthesizes proteins necessary for DNA replication. - **S Phase (Synthesis)**: The cell replicates its DNA, so each chromosome consists of two sister chromatids. - **G2 Phase (Gap 2)**: The cell continues to grow and prepares for mitosis. 3. **Identifying M Phase**: The M phase is where cell division occurs. It consists of two main processes: - **Karyokinesis**: This is the division of the nucleus and is further divided into four stages: - **Prophase**: Chromatin condenses into chromosomes, and the nuclear envelope breaks down. - **Metaphase**: Chromosomes align at the cell's equatorial plate. - **Anaphase**: Sister chromatids are pulled apart to opposite poles of the cell. - **Telophase**: The chromosomes de-condense, and the nuclear envelope re-forms around each set of chromosomes. - **Cytokinesis**: This is the division of the cytoplasm, resulting in two separate daughter cells. 4. **Conclusion**: The cell cycle includes both Interphase and M phase, which encompasses all the stages mentioned in the other options. Therefore, the correct answer is that a cell cycle includes Interphase and M phase.

### Step-by-Step Solution: 1. **Understanding the Cell Cycle**: The cell cycle is a series of events that take place in a cell leading to its division and replication. It consists of two main phases: Interphase and M phase. 2. **Identifying Interphase**: Interphase is the phase where the cell spends most of its life. It is further divided into three sub-phases: - **G1 Phase (Gap 1)**: The cell grows and synthesizes proteins necessary for DNA replication. - **S Phase (Synthesis)**: The cell replicates its DNA, so each chromosome consists of two sister chromatids. - **G2 Phase (Gap 2)**: The cell continues to grow and prepares for mitosis. ...
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NCERT FINGERTIPS ENGLISH-CELL CYCLE AND CELL DIVISION-Cell Cycle And Cell Division
  1. Read the following statements about cell division and select the corre...

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  2. Which of the following phases of the cell cycle is not a part of inter...

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  3. A cell cycle includes

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  4. In which stage DNA replication takes place ?

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  5. Synthesis of histone proteins occurs in

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  6. Select the incorrect statement regarding S phase of interphase.

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  7. The DNA content of individual cells and the number of cells in each ph...

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  8. Cell would normally proceed to mitosis without interruption

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  9. The cells that do not divide further, exit G(1) phase to enter an inac...

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  10. Which of the following statements is correct ?

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  11. In which of the following stages, a choromosome is minimum coiled?

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  12. Which of the following statements is correct regarding G(0) phase?

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  13. Best material for studying mitosis in laboratory is

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  14. Mitotic spindle is mainly composed of proteins.

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  15. Microtubules are absent in

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  16. Centrosome undergo duplication during (i) of (ii) and begin to move to...

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  17. is the best stage to count the number and study the morphology of chro...

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  18. is characterised by all the chromosomes coming to lie at the equator, ...

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  19. Read the following statements. (i) In mitotic cell division chromoso...

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  20. You are provided with floral buds of Chrysanthemum in your class and a...

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