Why do you test a non genetically modified organism first?

Testing a non-genetically modified organism (non-GMO) first is essential to establish a baseline for comparison. It helps identify any natural variations in traits or responses that may occur without genetic modification. Additionally, this approach ensures that any observed effects in subsequent tests involving GMOs can be attributed to the genetic modifications rather than other environmental or biological factors. Ultimately, it enhances the reliability and validity of the research findings.