| A | B |
| DNA | deoxyribonucleic acid |
| transformation | changing rough bacteria into smooth bacteria |
| nucleotide | The building blocks of DNA&RNA |
| DNA replication | Uncoil,unzip,make a exact copy |
| Chromatin | Stretched out DNA |
| RNA | Ribonucleic acid |
| Transcription | Re-writining DNA's info into mRNA |
| mRNA | ribosomal RNA |
| tRNA | transfer RNA |
| codon | 3 nitrogen bases that are read together |
| translation | the process that uses all three forms of RNA to synthesize proteins |
| anitcodon | three opposite nitrogen bases found on tRNA |
| promoter | the region of the DNA that serves as a place for RNA polymerase to start transcription |
| repressor | the molecule that holds the "kink" in the DNA strand so the gene is unexpressed |
| operator | the places where the repressor binds to the DNA |
| intron | the "junk" DNA |
| exon | the important DNA |