Stage in some fungi having two haploid nuclei per cell is

Options

A. Diplotene
B. Dikaryophase
C. Dikaryotic
D. Diplotene

Answer

To answer the question "Stage in some fungi having two haploid nuclei per cell is," we can follow these steps:

### Step 1: Understand the Terms
First, we need to understand the relevant terms related to fungal reproduction. In fungi, sexual reproduction involves two main processes: plasmogamy and karyogamy.

### Step 2: Identify the Stages
- **Plasmogamy** is the fusion of the cytoplasm from two parent cells, which results in a cell with two nuclei (one from each parent).
- **Karyogamy** is the subsequent fusion of these two nuclei to form a diploid nucleus.

### Step 3: Define the Stage with Two Nuclei
The stage where two haploid nuclei exist side by side in a common cytoplasm, before they fuse, is referred to as the **dikaryophase**.

### Step 4: Analyze the Options
Now, let's analyze the options provided:
1. **Dikaryon**: This term refers to cells that contain two nuclei, but it does not specifically denote the stage before karyogamy.
2. **Dikaryophase**: This is the correct term for the stage where two haploid nuclei are present in the same cell.
3. **Diploid**: This refers to a cell that contains two complete sets of chromosomes, which is not the case here.
4. **Diplotin**: This is a term related to meiosis and is not applicable to the question.

### Step 5: Conclusion
Based on the definitions and analysis, the correct answer is **dikaryophase** (Option 2).

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