Explain the different stages of development of human baby from a zygote.

Explanation

### Step-by-Step Text Solution:

1. **Fertilization**: The process begins when a female gamete (ovum) is fertilized by a male gamete (sperm). This fusion results in the formation of a single cell called a zygote.

2. **Zygote Formation**: The zygote is the initial stage of development and is a single-cell entity. It contains genetic material from both the mother and father.

3. **Cell Division**: After formation, the zygote undergoes a series of rapid cell divisions, known as cleavage. This process transforms the zygote into a multicellular structure.

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