Fill in the blanks:
Synapsis is pairing of `"________"` chromosome.

Explanation

**Step-by-Step Solution:**

1. **Understanding Synapsis**: Synapsis is a crucial process that occurs during meiosis, specifically in prophase I. It involves the pairing of chromosomes.

2. **Identifying the Type of Chromosomes**: The chromosomes that pair during synapsis are not just any chromosomes; they are specific types that share similar genetic information.

3. **Defining Homologous Chromosomes**: The chromosomes that undergo synapsis are called homologous chromosomes. These are pairs of chromosomes, one inherited from each parent, that have the same genes at the same loci but may have different alleles.

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