What kinds of materials obtained at a crime scene might contain DNA?Group of answer choicesBloodSkinSalivaAll of the above

DNA fingerprinting has been used in criminal investigations because __________Group of answer choicesbacterial DNA on the hands of criminals may provide a clue as to where that person was when the crime was committedDNA found on murder weapons is easy to identifycriminals leave DNA samples behind them when they touch objects at a crime sceneDNA analysis is believed to allow investigators to distinguish body cells of different individuals, who are unlikely to have the same DNA

What is used to chop DNA into fragments?Group of answer choicesRestriction EnzymesDNA scissorsVery tiny chef knivesScissor Enzymes

What should your extracted DNA look like?Group of answer choicesLong thin strands floating in the ethanol layer.A fluffy substance floating in the ethanol layer.Long thin strands in the pea mixture layer.A fluffy substance in the pea mixture layer.

Which evidence should be collect first at a crime scene?Question 5Select one:a.Wet biologial material such as blood or semenb.Largestc.Smallestd.Fragilee.None of the above

What should your extracted DNA look like?