Respuesta :

Explanation:

When the sperm meets the egg during sexual reproduction, a zygote is formed. This single-cell zygote is the first step of a much more complex multi-cellular organism.

Answer:

The zygote divides, ultimately forming a hollow bundle of cells.

Explanation:

Once a zygote divides, it begins to rapidly divide. It first forms a ball of cells before forming a hollow bundle of cells called blastocyst.