DNA was incubated with radioactive nucleotides - VCE - SSCE Biology - Question 14 - 2005 - Paper 1
Question 14
DNA was incubated with radioactive nucleotides. After one cycle of replication the distribution of radioactive and non-radioactive nucleotides in the DNA would be
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Worked Solution & Example Answer:DNA was incubated with radioactive nucleotides - VCE - SSCE Biology - Question 14 - 2005 - Paper 1
Step 1
A
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Answer
This option is not correct as it shows both strands having only radioactive nucleotides after the first replication cycle.
Step 2
B
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Correct! In option B, one strand is made of entirely non-radioactive nucleotides, while the other strand contains both radioactive and non-radioactive nucleotides from the original template strand.
Step 3
C
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Answer
This option illustrates that both strands contain entirely non-radioactive nucleotides, which is incorrect after one cycle of replication.
Step 4
D
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Answer
This option also shows an incorrect distribution, as it represents a scenario that does not align with the expected results of the replication process.
