Both centrioles in a centrosome lie ……….(i) ……..to each other and each of them contains ……..(ii)……..peripheral fibril so ………..(iii) ………….array is present .

Options

A. (i) parallel (ii) Triplet (iii) 9+0
B. (i) Perpendicular (ii) Doublets (iii) 9+0
C. (i) Parallel (ii) Doublet (iii) 9+0
D. (i) Perpendicular (ii) Triplet (iii) 9+0

Answer

To solve the question, we will fill in the blanks step by step based on the information provided in the video transcript.

### Step-by-Step Solution:

1. **Understanding the Position of Centrioles**:
- Both centrioles in a centrosome lie **perpendicular** to each other.
- This is a key characteristic of centrioles within a centrosome.

2. **Identifying the Structure of Centrioles**:
- Each centriole contains **nine** peripheral fibrils.
- These peripheral fibrils are arranged in a specific way.

3. **Describing the Arrangement of Fibrils**:
- The arrangement of these peripheral fibrils is in the form of **triplets**.
- This means that each of the nine peripheral fibrils is organized into three groups of triplets.

4. **Finalizing the Array Description**:
- The overall array present is described as a **9 + 0** arrangement.
- This indicates that there are nine peripheral fibrils organized in triplets, with no central pair of microtubules.

### Complete Answer:
Both centrioles in a centrosome lie **perpendicular** to each other and each of them contains **nine** peripheral fibrils so a **9 + 0** array is present.