In animal cytokinesis, the cleavage extends ……………

Explanation

**Step-by-Step Solution:**

1. **Understanding Cytokinesis**: Cytokinesis is the process of cytoplasmic division that occurs after mitosis, resulting in two daughter cells. In animal cells, this process is characterized by the formation of a cleavage furrow.

2. **Formation of Cleavage Furrow**: During animal cytokinesis, the cleavage furrow begins to form at the cell membrane. This is the initial step where the cell starts to divide.

3. **Direction of Cleavage**: The cleavage furrow extends from the periphery of the cell towards the center. This means that the division of the cytoplasm occurs inwards.

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