Parasexual cycle occurs in :-

Options

A. Phycomycetes
B. Deuteromycetes
C. Ascomycetes
D. Basidiomycetes

Answer

### Step-by-Step Solution:

1. **Understanding Parasexual Cycle**: The parasexual cycle is a form of genetic recombination that occurs in certain fungi, allowing for genetic variation without the need for sexual reproduction.

2. **Identifying Organisms**: The parasexual cycle is found in various groups of fungi, including:
- Phycomycetes
- Deuteromycetes
- Ascomycetes
- Basidiomycetes

3. **Key Characteristics**:
- The parasexual cycle is primarily observed in fungi that reproduce asexually.
- It involves several key processes:
- Fusion of protoplasm
- Fusion of nuclei
- Formation of haploid cells

4. **First Discovery**: The parasexual cycle was first discovered in the fungus *Aspergillus nudilens*, which is a member of the Deuteromycetes.

5. **Conclusion**: Among the groups mentioned, the parasexual cycle is most notably associated with Deuteromycetes, which are characterized by their asexual reproduction.

### Final Answer:
The parasexual cycle occurs in **Deuteromycetes**.

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