Stupidity: Dexter keeps evidence of his murders in his apartment, but never thinks to have any kind of security system such as motion detectors and cameras. This is especially egregious given that 1. The first rule of Dexter's code is to not get caught. 2. Sgt. Doakes broke into Dexter's apartment and found his blood slides, and very nearly used them to prove that Dexter is a serial killer, and 3. Dexter discovered that Stan Liddy bugged his apartment.
Dexter (2006)
1 stupidity in show generally
Starring: James Remar, Michael C. Hall, Jennifer Carpenter, David Zayas
Dirty Harry - S4-E5
Continuity mistake: When Dexter listens to Officer Lundy's tape recording, we hear Lundy say that the Trinity killer's weight is 190 to 200 pounds. When we saw him recording that, he said 200 to 220 pounds.
Isaak Sirko: You didn't kill Victor out of vengeance. I have a feeling you're a different kind of animal. The question is...what kind are you, Dexter Morgan?
Dexter: The kind who hunted your friend down and strapped him to a board and put a plastic bag on his head and crushed his skull with a fire extinguisher. The kind who's gonna do the same thing to you, give or take the fire extinguisher.
Trivia: Michael C. Hall and Jennifer Carpenter, who play siblings on the show, were actually married in real life, from 2008 - 2011.
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"?
Answer: The short answer is yes, it could. but, it would have to be set up to analyze results to differentiate species. The sequencer will report the base pairs for any properly prepared sample, but interpreting the results is a software package. The software is available, but I would think it unlikely that an analysis package used in a forensics lab would have the capability to be so specific. More likely it would report "Non Human Sequences Found."