This gene family plays a key role in the control of embryonic development in all multicellular animals.

In multicellular animals, however, there is an added dimension to growth.

In multicellular animals, though, dopamine is very widely used as an intercellular messenger.

Nervous systems are found in most multicellular animals, but vary greatly in complexity.

And, later, the first multicellular animals, then the first complex creatures, in the sea, on the land.

In multicellular animals (metazoans) offspring may develop as outgrowths of the mother.

All multicellular animals share another batch of genes, largely for cells to communicate with each other.

They are found almost exclusively in multicellular animals.

However, no third gamete is known in multicellular animals.