About four or five days after ferilization, a group of cells forms a ball like structure. What is the name of this structure

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction.

Iwanna go do something with my ideas? ?