Chapter 7 section #3

Collection and preservation of DNA

1. Wear disposable gloves and change them often
2. If wet evidence cannot be dried, it may be frozen
3. Put evidence into new paper bags or envelopes
4. Keep evidence cool and dry during transportation and storage
5. Use disposable instruments for handling each sample
6. Avoid talking, sneezing, and coughing over evidence
7. Avoid touching the area where you believe DNA may exist
8. Air-dry evidence thoroughly before packaging
9. Avoid touching your face, nose, and mouth when collecting and packaging evidence

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?