During a fight between a number of people, one was seriously injured - VCE - SSCE Biology - Question 28 - 2013 - Paper 1
Question 28
During a fight between a number of people, one was seriously injured. Blood samples were taken from the victim, the crime scene and four suspects.
DNA was extracted ... show full transcript
Worked Solution & Example Answer:During a fight between a number of people, one was seriously injured - VCE - SSCE Biology - Question 28 - 2013 - Paper 1
Step 1
Identify DNA Bands from the Crime Scene
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Answer
Analyze the electrophoresis results shown in the diagram. Compare the bands present in the crime scene sample with those of the victim and suspects.
Step 2
Compare with the Victim
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Answer
The bands from the victim should closely match those present in the crime scene sample if the individual was indeed present.
Step 3
Match With Each Suspect
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Answer
Look at the bands for each suspect. Determine which suspect has DNA bands that match the bands from the crime scene. Here, suspect 2 displays the closest match.
Step 4
Select the Likely Suspect
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Answer
Based on the closest match, the individual who is most likely to have been at the crime scene is suspect 2.
