Number of centrioles present in a centrosome

Options

A. One
B. Two
C. Three
D. Four

Answer

**Step-by-Step Solution:**

1. **Understanding Centrosome Structure**: A centrosome is a cellular structure that plays a crucial role in cell division and organization of microtubules. It is composed of two centrioles.

2. **Identifying the Number of Centrioles**: Each centrosome contains a pair of centrioles arranged perpendicular to each other. This means that there are two centrioles in a single centrosome.

3. **Role During Cell Division**: During cell division, the centrioles replicate, and each centrosome will then have two centrioles. These centrioles help in the formation of the spindle fibers that are essential for separating chromosomes.

4. **Conclusion**: Therefore, the number of centrioles present in a centrosome is two.

**Final Answer**: The number of centrioles present in a centrosome is **two**.

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