___________undergoes cell division and a new offspring is formed.

Answer

**Step-by-Step Solution:**

1. **Understanding Cell Division**: Cell division is a process where a single cell divides to form new cells. This is essential for growth, development, and reproduction in living organisms.

2. **Identifying the Context**: In the context of reproduction, particularly sexual reproduction, the process begins with the fusion of male and female gametes.

3. **Fertilization Process**: The male gamete (sperm) and the female gamete (ovum or egg) come together during fertilization. This fusion results in the formation of a zygote.

4. **Formation of the Zygote**: The zygote is a single cell that is formed after the fertilization of the male and female gametes.

5. **Cell Division of the Zygote**: The zygote undergoes cell division, which is the process that allows it to grow and develop into a multicellular organism.

6. **Development of the Embryo**: As the zygote continues to divide, it develops into an embryo. This is a crucial stage in the development of a new organism.

7. **Resulting Offspring**: Ultimately, after further development and growth, the embryo will develop into a new offspring, which in humans is a baby.

**Final Answer**: The zygote undergoes cell division and a new offspring is formed.

---