| A | B |
|---|
| antibiotic | kills disease-causing bacteria, such as penicillin |
| clone | an organism that receives all of its DNA from one parent and is genetically identical to the parent |
| DNA | complex molecule that contains the genetic code of an organism |
| gene splicing | takes genes from one organism and adds them to the genes of another organism |
| genetic engineering | a way of intentionally changing a genetic squence in DNA so that a particular trait is produced |
| geneticist | a scientist who studies how heredity works |
| genome | consists of all the DNA that makes up an organism |
| mutation | a change in an organism's DNA |
| natural selection | occurs when the organisms that are best suited to their environments survive and reproduce successfully |
| variation | a difference among members of the same species that enable individuals to better to survive and reproduce |
| double helix | the shape of DNA |
