Transfer of genetic material from one bacterium to another by a virus is known as ..........

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the term that describes the transfer of genetic material from one bacterium to another through a virus.

2. **Identifying the Process**: The process by which genetic material is transferred from one bacterium to another by a virus is known as transduction.

3. **Role of Bacteriophages**: In this process, the viruses that infect bacteria are called bacteriophages. These bacteriophages act as vectors to facilitate the transfer of DNA or genetic material.

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