The picture of the DNA double helix provides a logical start to describing how the base pairs match up and how the order codes for a chain of protein molecules—three billion of these base pairs code for any protein present in your body....

How is DNA structured? Composed of deoxyribose, phosphate, and bases, DNA seems so simple, yet it determines so much of who we are. Give your class a better understanding of their genetic makeup with this video. Part two of two.