| Part 3 - Pre-exposure of worms to drugs to test if their preference for |
| them, if any, increases. |
| -Place each mutant/the worms directly on top of the two drops of drug |
| on each plate for 20 minutes. |
| -Take worms off and transfer them to a plate with only agar for 20 |
| minutes. |
| -Perform chemotaxis on the worms - similar to that in part 2. |
| |
| Repeat step 2 and step 3 for a second trial. |
| |
| |
| Both step 2 worms will be added and step 3 worms will be added. |
| Bibliography | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3667641/https://www.ncbi |
| .nlm.nih.gov/pmc/articles/PMC4834862/ |