Gizmo Warm-up Many farmers use chemical herbicides to kill

Last updated: 7/23/2022

Gizmo Warm-up Many farmers use chemical herbicides to kill weeds and insecticides to kill insects. Using genetic engineering, scientists have developed ways to resist harmful crop pests. In the Genetic Engineering Gizmo, you will use genetic engineering techniques to create genetically modified corn. Check that Task 1 is selected. The Gizmo shows petri dishes that contain different strains of bacteria (white dots) and caterpillars (Lepidoptera sp. larvae). In the first challenge, your goal is to find bacteria that produce toxins that kill the caterpillars. Click Play 1. What do you observe? 2. 3. Which strains of bacteria were able to kill Lepidoptera sp. larvae? 4 Were some more effective than others? Explain.