Global Status of Field-Evolved Pest Resistance to Bt Crops (image) University of Arizona Share Print E-Mail Caption Global status of field-evolved pest resistance to Bt crops: Of the 24 cases analyzed, five showed resistance that caused reduced efficacy of Bt crops (red), five were intermediate levels of resistance (orange and yellow), and 14 showed either little or no resistance (blue and green). Credit Image courtesy of Nature Biotechnology Usage Restrictions This visual may only be used in conjunction with reporting/posting of this news release. Image/video credit must be included exactly as indicated. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.