| A | B |
|---|
| Sugar-Phosphate Backbone | SPB |
| Excision Dimers | ED |
| P site | Part of a ribosome that holds a growing amino acid chain. |
| Quaternary Structure | A protein that has more than one ploypeptide subunit. |
| Euchromatin | Chromosomes that do not stain; it contains active genes. |
| Nondisjunction | The unequal partioning of chromosomes into gametes during meiosis. |
| Antiparallelism | The head-to-tail arrangement of the two entwined chains of the DNA double helix. |
| Mismatch Repair | Proofreading of DNA for misaligment of short, repeated segments. |
| A site | Part of a ribosome that holds the incoming amino acid in a growing peptide chain. |
| Mutation | A change in a gene's biochemical makeup; a change in the DNA. |
| Chronic Villus Sampling | A prenatal diagnosis technique that anayles chromosome in chorionic villus cell which descend from the fertilized ovum. |
| Translocation | Exchange of genetic material between nonhomoglomous chromosomes. |
| Helicases | A type of enzyme that unwinds and holds apart stands of replicating DNA |
| Operons | Genes whose enzymes products interact in a cooridinate fashion in a particular metabolic pathway in bacteria. |
| Primary Structure | PS |
| Cytogenetics | CG |
| Chromosomal Mosaicism | CM |
| Dicentric | DC |
| Thymine Dimers | TD |
| Uracil | UR |
| Secondary Structure | SS |
| Metacentric | MC |
| Polyploidy | PP |
| Acentric Fragment | AF |
| Photolyases | PL |
| Translocation Initiation | TI |
| Tertiary Structure | TS |
| Heterochromatin | HC |
| Aneuploidy | AP |
| Pacentric Inversion | PI |
