| A | B |
|---|
| Adenine | Thymine |
| Cystine | Guanine |
| Double | Helix |
| Building block of DNA | nucleotide |
| 3 parts of any nucleotide | sugar, phospahte and base (letter) |
| codons stand for one | amino acid |
| every 3 letters in DNA equals a | codon |
| repication occurs in the | nucleus |
| unwind and unzip | 1st step in replication |
| helicase | enzyme that helps unwind DNA |
| DNA Polymerase | enzyme in replicaiton that checks DNA is mathcing correclty |
| after DNA unwinds and unzips during replication it will | move apart |
| ________ DNA will fill in next to each 1/2 of original DNA | mathching |
| Replication is needed for | new cells, cell growth |
| when DNA makes an exact copy of itself and each new cell has identical DNA | Replication |
