DNA profiling may be used in criminal investigations - Scottish Highers Human Biology - Question 5 - 2015
Question 5
DNA profiling may be used in criminal investigations.
During this procedure DNA is cut into fragments by two different enzymes. Each enzyme cuts DNA at a specific po... show full transcript
Worked Solution & Example Answer:DNA profiling may be used in criminal investigations - Scottish Highers Human Biology - Question 5 - 2015
Step 1
Enzyme 1 only
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Answer
When enzyme 1 cuts the DNA strand, it creates 3 fragments.
Step 2
Enzyme 2 only
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When enzyme 2 cuts the DNA strand, it also creates 4 fragments.
Step 3
Enzymes 1 and 2
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When both enzymes are used together, they cut the DNA strand and result in 6 fragments.
Step 4
Conclusion
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Thus, the correct line from the table that indicates the number of fragments produced using enzyme 1 only, enzyme 2 only, and both enzymes is line D: 3, 4, 6.
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