Define the term chiasmata. Name the stage of Prophase-I when it occurs.

Explanation

### Step-by-Step Solution:

1. **Definition of Chiasmata**:
- Chiasmata are the points where crossing over occurs between non-sister chromatids of homologous chromosomes during meiosis. This process allows for genetic recombination, which increases genetic diversity.

2. **Explanation of Homologous Chromosomes**:
- Homologous chromosomes consist of a pair of chromosomes, one inherited from the mother (maternal) and one from the father (paternal). Each homologous chromosome has the same genes at the same loci but may have different alleles.

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