A cell cycle consists of :-

Options

A. Mitosis and meiosis
B. `G_(1)`, S, `G_(2)` phase
C. Prophase, Metaphase, Anaphase and telophase
D. Interphase and mitosis

Answer

To answer the question "A cell cycle consists of:", we need to understand the components of the cell cycle. The cell cycle is a series of events that take place in a cell leading to its division and duplication. Here’s a step-by-step breakdown of the cell cycle:

### Step 1: Understand the Phases of the Cell Cycle
The cell cycle is divided into two main phases: Interphase and the Mitotic phase (M phase).

**Hint:** Remember that the cell cycle is not just about division; it also includes preparation for division.

### Step 2: Identify Interphase
Interphase is the longest phase of the cell cycle and is further divided into three sub-phases:
- **G1 Phase (Gap 1):** This is the first growth phase where the cell grows and synthesizes proteins necessary for DNA replication.
- **S Phase (Synthesis):** During this phase, DNA is replicated, resulting in two copies of each chromosome.
- **G2 Phase (Gap 2):** This is the second growth phase where the cell continues to grow and prepares for mitosis by producing the necessary proteins and organelles.

**Hint:** Interphase is all about growth and preparation for the next phase.

### Step 3: Identify the Mitotic Phase
The Mitotic phase (M phase) is where the actual cell division occurs. It consists of:
- **Karyokinesis:** The division of the nucleus.
- **Cytokinesis:** The division of the cytoplasm, resulting in two daughter cells.

**Hint:** M phase is crucial because it is the phase where the cell actually divides.

### Step 4: Conclusion
Putting it all together, the cell cycle consists of Interphase (G1, S, G2) and the Mitotic phase (M phase). Therefore, the correct answer to the question is "Interphase and Mitosis."

**Final Answer:** A cell cycle consists of Interphase and Mitosis.