2. Mrs. Singley has provided her students with the opportunity to participate in peer editing. Peer editing can be a powerful tool in that it gives the writer feedback from an audience separate from the teacher. Think of a way you could use peer editing in your classroom. Reflect.

Okay, biology isn't exactly my strongest subject (it never has been), but i'm pretty sure the answer is nucleotides. dna is made up of nucleotides. each nucleotide contains a phosphate group, a sugar group, and a nitrogen base. there are four different nitrogen bases: adenine (a), thymine (t), guanine (g), and cytosine (c). a always pairs with t, and g always pairs with c.