Why can DNA extraction be a very painstaking process for forensic scientists?
A) It can be difficult to obtain enough cells in a sample to yield enough DNA.
B) Samples can become contaminated with foreign DNA from improper handling.
C) Samples stored improperly can degrade too much to be used.
D) Samples from the crime scene may contain DNA from multiple individuals.
E) All of the above.
Correct Answer:
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