Question

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A murder has occurred and the crime scene is being investigated. Blood is found at multiple sites on the scene and this blood is collected for analysis. There is one victim and the victim’s blood has been collected for analysis. There are two suspects who have been detained and their blood has also been collected for analysis. Based on this situation, differentiate between the known and unknown samples and explain why they are useful in criminal investigation.

Answer 1

Since the development of serology in forensic science, blood typing has been an incredibly useful tool in forensic science and investigation. Blood is a very impertinent part of DNA and two different suspects would have blood that tests differently(like their Rh factor or blood type).