Describe the process of cleavage upto the formation of blastocyst

Explanation

### Step-by-Step Solution:

1. **Definition of Cleavage**: Cleavage is a phase in embryogenesis that occurs after fertilization. It involves the division of the single-celled zygote into multiple cells.

**Hint**: Remember that cleavage is the initial stage of development after fertilization.

2. **Formation of Zygote**: After fertilization, the zygote is formed as a single cell. This zygote is diploid (2N) but is counted as one cell.

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