| A | B |
|---|
| DNA | a molecule present in all living things that contians information to determien traits |
| nucleotide | a subunit of DNA made up of a sugar, a phosphate, and a nitrogen base |
| phosphate | in DNA connects the sugars to each other |
| sugar | in DNA connects the base to the phosphate |
| base | one of four different pieces that make up the rungs of the DNA ladder |
| adenine | a base that connects with thymine |
| thymine | a base that connects with adenine |
| cytosine | a base that connects with guanine |
| guanine | a base that connects with cytosine |
| double helix | the shape of a strand of DNA which looks like a twisted ladder |
| replicate | to make a copy of a piece of DNA |
| gene | a string of nucleotides |
| Watson & Crick | given credit for the double helix model |
| Franklin & Wilkins | took pictures of DNA |
| Chargaff | discovered that percentages of C and G were almost equal |
| bacteriophage | virus that infects bacteria |
| Griffith | did an experiment with mice that demonstrated transformation |
| transformation | process in which one strain of bacteria is changed by genes into another |
| DNA nitrogen bases | A, C, G, T |
| RNA nitrogen bases | A, C, G, U |
| hydrogen | bonds together AT and CG |
| backbone | the sugar-phosphate part of the double helix |
| purines | adenine & guanine |
| pyrimidines | cytosine & thymine |
| have two rings in their structures | purines |
| have one ring in their structures | pyrimidines |
| deoxyribose | the sugar in DNA |
| -ose | word ending indicating a sugar |
