Samples of DNA were taken from four individuals - VCE - SSCE Biology - Question 33 - 2013 - Paper 1
Question 33
Samples of DNA were taken from four individuals. The samples went through a series of steps and the resulting DNA is shown.
original samples
DNA sample 1 DNA ... show full transcript
Worked Solution & Example Answer:Samples of DNA were taken from four individuals - VCE - SSCE Biology - Question 33 - 2013 - Paper 1
Step 1
A. Samples 1 and 2 are from individuals belonging to the same species.
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Answer
Samples 1 and 2 show similar DNA patterns, indicating a closer genetic relationship, which suggests they may be from the same species.
Step 2
B. Treatment at step X would have included cooling each of the original samples.
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There is no direct evidence in the diagram to support this assumption as step X is not detailed in its methodology.
Step 3
C. Treatment of mixed samples at step Y would have included the addition of DNA helicase.
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The diagram does not provide any information regarding the addition of DNA helicase during the mixing process.
Step 4
D. Individuals belonging to samples 1 and 3 are more closely related than individuals belonging to samples 3 and 4.
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The diagram suggests that the DNA patterns for samples 1 and 3 are more similar, indicating a closer genetic relationship compared to samples 3 and 4.
