| A | B |
| Genetics | study of heredity |
| Genome | sum total of genetic material of a cell |
| Chromosomes | DNA complexed with protein |
| Gene | region within chromosome |
| 3 basic categories for genes | 1) structural, 2) code for RNA, 3) regulatory |
| Genotype | genetic makeup |
| Phenotype | expression of genotype |
| Expressed | gene that's turned on |
| DNA polymerase | adds one base at a time |
| transcription | info stored on DNA molecule conveyed to RNA molecules |
| translation | info in RNA used to produce proteins |
| ribose | 5 carbon sugar |
| RNA | single stranded molecule made of nucleotides |
| mRNA | messenger RNA, carries message thru complementary code |
| tRNA | transfer RNA, brings amino acid to ribosome during translation |
| rRNA | ribosomal RNA, forms major part of ribosome & participates in protein synthesis |
| promoter region | RNA polymerase binds to region upstream of gene |