True, laboratory examination may narrow the origin of such evidence to a group of persons that includes the suspect.
More about laboratory examination:
Scientists examine the evidence gathered from crime sites, suspects, and sufferers in crime laboratory. They can examine everything, including DNA, biometrics, human body parts, and questionable objects.
Numerous labs have seen increased responsibilities as a consequence of the increasing reliance on scientific approaches in criminal investigations. By narrowing their procedures and offering up-to-date training, NIJ is committed to assisting crime laboratories in growing their capacity to keep up with technological advancements in crime solving.
Learn more about the laboratory here:
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Their mother teaching things in the same way for both of them
Answer:
I would have to say invalid.
Explanation:
There is not enough information to have a fully valid argument.