Name the host and the site where the following occur in the life cycle of a malarial parasite :
(a) Formation of gametocytes.
(b) Fusion of gametocytes.

Explanation

To answer the question regarding the life cycle of a malarial parasite, we need to identify the host and the site for two specific processes: the formation of gametocytes and the fusion of gametocytes.

### Step-by-Step Solution:

1. **Formation of Gametocytes:**
- **Host:** The host for the formation of gametocytes is **humans**.
- **Site:** The specific site within the human body where the formation occurs is the **red blood cells (RBCs)**.

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