Wednesday, April 8, 2009

DNA



DNA (deoxyribonucleic acid)  is a nucleic acid that contains the genetic code for life. It also governs what traits you get and what you don't.  DNA is made out of a series of four nitrogen bases: Thymine, Guanine, Cytosine, and Adenine. These nitrogen bases only pair with specific other bases, Adenine always pairs with Thymine while Guanine always pairs with Cytosine. the sides of a DNA ladder are made out of a sugar called deoxyribose and which lternated with another molecule known as phosphates.