Answer:
Hi there,
They are connected because both of them find identities to someone. All DNA Profiling is, is using either semen, blood, urine, even a strand of hair to test and find whoever left those categories behind. It is used in forensic science that is where they can find the victim's identity or find the suspect.
DNA Profiling and Blood are the same things, in fact, blood IS part of DNA profiling it helps with the testing process in forensic science.
I hope this helped :)
