The stage when the paired homologous chromosomes appear as bivalent

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks for the specific stage in the cell cycle when homologous chromosomes appear as bivalents.

2. **Identifying the Relevant Stage:**
The relevant stage in the cell cycle is Prophase I of meiosis. This is the stage where significant events occur that lead to the formation of bivalents.

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