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 tapeb) baseball batc) greeting card enveloped) used condome) bed sheetf) drinking glassg) cell phoneh) syringei) lipstickFor example: wooden baseball bat.location of evidence: handle, body of bat, tip of bat.sources of DNA or other evidenc: blood, skin, tissue, hairs, fibers, fingerprints350-500 wordsAPA format