Give the term for the extranuclear rings of DNA molecules.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the term that describes the extranuclear rings of DNA molecules. This means we are looking for a specific type of DNA that exists outside the nucleus of a cell.

2. **Identifying Key Characteristics**: The term we are looking for refers to a small, circular DNA molecule that is not part of the chromosomal DNA. It is important to note that this DNA can replicate independently of the chromosomal DNA.

3. **Recognizing the Term**: The term that fits this description is "Plasmid." Plasmids are small, circular, extra-chromosomal DNA molecules found primarily in bacteria.

...