[A boy can absolutely dream. Ford would like to encourage this, where he can.]

Yes! Animals have cells as well; their structure is a little different but that's not terribly important to the matter at hand. What is important is that each of the cells that make up your body contains a copy of your genes. The human body is highly-specialized and contains hundreds of different kinds of cells that each serve a unique purpose, so you can think of your genes as the instruction manual. It's actually a very simple code that your cells read and interpret.