What happens during leptotone?

Explanation

### Step-by-Step Solution:

1. **Definition of Leptotene**: Leptotene is the first stage of prophase I in meiosis. It is a crucial part of the cell division process that leads to the formation of gametes.

2. **Characteristics of Prophase I**: During prophase I, several key events occur, and leptotene marks the beginning of this phase. This stage is characterized by the condensation of chromatin into visible chromosomes.

3. **Chromosome Formation**: In leptotene, the chromatin fibers condense to form distinct chromosomes. These chromosomes appear as X-shaped structures, which are the result of DNA replication that has occurred prior to meiosis.

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