You conduct an ELISA sample to test the presence of antibodi…

You conduct an ELISA sample to test the presence of antibodies in a patient sample.  After conducting the entire experiment, you suddenly realize that you did not add any substrate (antigen) to the wells in the initial step.  Under such circumstances, the development of a colored reaction in the patient sample (positive result) would indicate a ——-

The following gel shows the results of a crime scene investi…

The following gel shows the results of a crime scene investigation.  Lane 1 shows a DNA sample that was obtained from the scene of a crime (there was evidence of the criminal cutting himself, so it’s the criminal’s blood sample that produced the DNA bands in lane 1). Lanes 2-7 shows a DNA sample from six potential suspects held in connection with the crime.  Which suspect (#2 through #7) is most likely to have committed the crime?