Why do people have certain traits and talents? We are all who we are because cells in our bodies grow and respond according to instructions from DNA molecules. RNA carries the DNA details from the cell nucleus to other parts of the cell. Featuring colorful images and diagrams, this book breaks down complicated scientific principles into pieces of information you can grasp more easily to help you gain a deeper understanding of how DNA and RNA work together to make all the individual humans, animals, and plants on our planet.