Question: Dexter tests the blood on Miguel's shirt, to see if it's Freebo's. It looks like he's just using a DNA sequencer and the blood result comes back "bovine." Can a DNA sequencer differentiate which species the blood came from like that? Or perhaps he was using a different type of blood analysis machine? Is there an analysis machine that's capable of that? I thought the way to test if blood is human or not, "anti-human serum" is mixed with the blood to see if it will clot. So wouldn't the only way to tell it was bovine blood is to inject it with "anti-bovine serum"?
Question: In some episodes they mention an officer's romantic relationships can be used by attorneys to somehow discredit the officer and get the suspect off. In this episode specifically, Deputy Chief Matthews says the department can't risk a defense attorney turning Lt. LaGuerta and Sgt. Batista's romantic involvement a courtroom sideshow every time they work a case together (and thus Batista needs to be transferred out of Homicide). But why would it matter? Is this just "Hollywood" exaggeration for plot purposes? Wouldn't the prosecution object based on relevance if the defense attorney tried to bring this up, especially since Lt. Guerta disclosed the relationship through the proper channels? Or is Matthews lying for an ulterior motive.