Question

question #9
multiple choice
which of the following sources could not be used to obtain the dna of a person lost in a mass disaster?
used and unwashed clothing or bed sheets
food found in the victims refrigerator
a toothbrush used by the person
sunglasses regularly used by the person

Explanation:

Used and unwashed clothing/bed - sheets may have skin cells with DNA. A used toothbrush can have saliva with DNA. Sunglasses regularly used may have skin cells or sweat with DNA. Food in the refrigerator is not likely to have the person's DNA as it is not in contact with the person's body in a way that would transfer DNA.

Answer:

B. food found in the victim's refrigerator