Collection and preservation of DNA
If wet evidence cannot be dried, it may be frozen
Keep evidence cool and dry during transportation and storage
Avoid touching your face, nose, and mouth when collecting and packaging evidence
Put evidence into new paper bags or envelopes
Avoid talking, sneezing, and coughing over evidence
Air-dry evidence thoroughly before packaging
Avoid touching the area where you believe DNA may exist
Use disposable instruments for handling each sample
Wear disposable gloves and change them often
DNA is mixed with special ______________
DNA is separated within an ___________ gel
___________________ of DNA evidence can occur when DNA from another source is mixed with DNA that is relevant to the case.
DNA ____________________ differ from person to person.
______________________ can damage DNA evidence, because it encourages mold growth, which can damage the DNA material.
During electrophoresis, the DNA fragments which are the _____________ travel the farthest.
Cells are isolated from ___________________ such as blood, saliva, urine, semen, and hair.
The DNA can be extracted from the cell __________________.
DNA samples are placed in gels through which ______________ currents are passed
_______________________-a molecule that cuts a DNA molecule at a specific, base sequence
What does PCR represent?