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2.7: DNA Replication, Transcription and Translation

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Describe the meaning of "semi-conservative" in relation to DNA replication.



Understanding: The replication of DNA is semi-conservative and depends on complimentary base pairing.
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Describe the meaning of "semi-conservative" in relation to DNA replication.



Understanding: The replication of DNA is semi-conservative and depends on complimentary base pairing.
Semi-conservative means the products of DNA replication each contain one of the original DNA strands and one new strand.
Explain the role of complementary base pairing in DNA replication.​



Understanding: The replication of DNA is semi-conservative and depends on complimentary base pairing.
Complementary base pairing (A-T, C-G) ensures that the DNA sequence remains consistent after DNA replication. This ensures that the genetic code remains intact between generations.
State why DNA strands must be separated prior to replication.



Understanding: Helicase unwinds the double helix and separates the two strands by breaking hydrogen bonds.
The two strands of the parent DNA molecule must separate so that each can serve as a template for the new DNA strands that are being built.
Outline the function of helicase.



Understanding: Helicase unwinds the double helix and separates the two strands by breaking hydrogen bonds.
Helicase is an enzyme that attaches to the DNA and moves along the molecule separating unwinding the helix and separating the two strands by breaking hydrogen bonds.
State the role of the origin of replication in DNA replication.



Understanding: Helicase unwinds the double helix and separates the two strands by breaking hydrogen bonds.
The origin of replication is the sequence of DNA nucleotides at which replication is initiated.