What is the arrangement of microtubules in centriole and basal body?

Explanation

### Step-by-Step Solution:

1. **Understanding the Structure**: Both centrioles and basal bodies are cylindrical structures made up of microtubules. They are hollow and unbranched cylinders with a diameter of approximately 25 nm.

2. **Arrangement in Centrioles**:
- Centrioles consist of **9 microtubules** arranged in a specific pattern.
- These microtubules are organized in **triplets**, meaning that each group of three microtubules is closely associated together.
- The arrangement of microtubules in centrioles is referred to as **9 + 0**, indicating that there are 9 microtubules in total and none in the center.
...