What is the purpose of a precipitin test

Reference no: EM13889960

Responses to the Forum questions each week need to be substantial (350 words) and significantly supported by two scholarly sources. Students must also use proper spelling, grammar, and sentence structure. The in-text citations and references will be in APA Format.

Questions:

1. What is the purpose of a Precipitin test? List three strengths of Precipitin tests.

2. Explain the proper collection and packaging methodologies for biological evidence. Why should biological evidence never be packaged in air-tight or non-breathable mediums?

3. You received the following evidentiary items from a homicide investigation. Discuss the possible location on the item where DNA evidence (or other evidence) may be located and list the possible sources of DNA that may be present on the item.

a) 12" strip of duct tape

b) baseball hat

c) greeting card envelope

d) used condom

e) bed sheet

f) drinking glass

g) cell phone

h) syringe

i) lipstick tube

For example: Wooden Baseball Bat.

Location of evidence: Handle, body of bat, tip of bat.

Sources of DNA or other evidence: Blood, skin, tissue, hairs, fibers, fingerprints.

Reference no: EM13889960

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