Bacteria : Nuclcoid : Yeast : ..........

Explanation

**Step-by-Step Solution:**

1. **Understanding the Comparison**: The question compares two types of organisms: bacteria and yeast. We need to identify the structure in yeast that corresponds to the nucleoid in bacteria.

2. **Identifying the Structure in Bacteria**: In bacteria, the genetic material is stored in a region called the nucleoid. This is characteristic of prokaryotic cells, which lack a true nucleus.

3. **Characteristics of Nucleoid**: The nucleoid is irregular in shape, does not have a membrane, and contains circular DNA. It is a simple structure found in prokaryotes.

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