Clamp connections occur in

Options

A. Haplomycetes
B. Saccharomycetes
C. Basidiomycetes
D. Ascomycetes

Answer

**Step-by-Step Solution:**

1. **Understanding Clamp Connections**: Clamp connections are specialized structures found in certain fungi. They play a role in ensuring that each cell or segment of the hyphae receives a set of differing nuclei.

2. **Identifying the Phylum**: The question asks in which group these clamp connections occur. The options provided are haplomycetes, saccharomycetes, basidiomycetes, and ascomycetes.

3. **Analyzing the Options**:
- **Haplomycetes**: This group does not typically exhibit clamp connections.
- **Saccharomycetes**: This group, which includes yeasts, also does not have clamp connections.
- **Ascomycetes**: While this group has diverse structures, clamp connections are not a characteristic feature.
- **Basidiomycetes**: This group is known for having clamp connections, which are unique to this phylum.

4. **Conclusion**: Based on the analysis, clamp connections are exclusive to the phylum **Basidiomycota** (basidiomycetes). This feature is often used as a tool for identifying members of this phylum.

5. **Final Answer**: The correct answer is **basidiomycetes** (option C).

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