It's funnier than that. First we're unicellular, like some animals now. Then we're an unidifferentiated colony of cells, like some still-extant life-forms. Later we form a neural tube like "primitive" chordates which are still around.
What is essential is to try to understand the principle behind this "evolving". It is my contention that an intelligent design is responsible for this evolution. That "intelligent design" I choose to call the Creator or God. The more we can understand of this intelligent design, the better we can live and the more we can accomplish.