So the question gives me this info General mammalian life cycle

Gametes >> Process 1 >> Zygote >> Process 2 >> Embryo >> Process 3 >> Reproductive organs >> Process 4 >> Gametes. Process 1 seems to be fertilization, process 2 seems to be mitosis, but what about process 3? Process 4 is meiosis so I'm only stuck on what process 3 would be.

The question = Identify what is occurring at Process 1, Process 2, Process 3, and Process 4.