1. Describe the effects of the ECB infestations you used. Were all corn varieties equally effective at controlling the ECB? How do you know?
Continue with the remaining problems on the back of this page ?
2. If there was no ECB infestation in a certain year, would a farmer gain or lose financially by planting Bt corn? describe why?

3. What might happen if Bt corn affects non-target organisms such as beneficial insects or harmless insects?

4. What might happen if ECB became resistant to Bt?

5. Discuss possible benefits and drawbacks of a transgenic organism such as Bt corn?

6. A farmer planted a field of Bt 123 corn and wants to estimate the yield in terms of bushels per acre. He counts 22 ears in 1/1000 of an acre. He determines that each ear has about 700 kernels on average. He also knows that a bushel contains about 90 000 kernels on average. What is the farmer's estimate of yield in bushels/acre?