DNA Structure

Today I will be explaining the structure of DNA.  This is a picture of DNA.  DNA is made of things called nucleotides which consist of a sugar, a phosphate, and a base.  DNA is made of many of these nucleotides.  The base is half of a base pair.  The nucleotide on the other side of the strand of DNA matches with the base on the other nucleotide.  There are only four different bases: adenine, thymine, guanine, and cytosine, and only adenine and thymine, and guanine and cytosine are able to match up and become a base pair.  There are tons and tons of base pairs that make up a strand of DNA because it is so compact.  Also, the DNA is kind of twisted so that it makes a double helix shape.  And that is