Agene cannot react chemically and form a trait without the proper molecule enzyme substrate chromosome

The word from the pick list that fits here is "enzyme". Enzymes are normally spcialised protein molecules and they act as catalyst ie agents to speed up a reaction in causing traits to develop in the genes of organisms in reaction to chemical stimulants.

It may have some of the same features that it’s mother does but, it may have some of the same features that it’s father has as well.