GIZMO GENETIC ENGINEERING -ALL ANSWERS CORRECT-GRADED A

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Student Exploration: Genetic Engineering Vocabulary: callus, exon, genetic engineering, genetically modified organism, genome, green fluorescent protein (GFP), herbicide, insecticide, intron, promot... er, transcription, transformation Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. What are some things that can damage a farmer’s crops? 2. What can farmers do to protect their crops? 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. Which strains of bacteria were able to kill Lepidoptera sp. larvae? Were some more effective than others? Explain. Some bacteria are able to produce a toxin that kills Lepidoptera sp. larvae. Find out which gene is responsible for this toxin in the next step. [Show More]

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