do dna replication begins at a specific sequence of nucleotides called the origin of replication?
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Step 1: Understand the question The question asks whether DNA replication begins at a specific sequence of nucleotides called the origin of replication. Show more…
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What is the name of the locations that DNA replication begins along the DNA molecule?
Sri K.
What happens first at each origin of replication?
Adi S.
Initiation DNA replication starts at specific nucleotide sequence called the origin of replication. The enzyme helicase unwinds the DNA by breaking the hydrogen bonds that hold the two polynucleotide strands together. Single-strand binding proteins help stabilize the single strands of DNA and prevent the two strands from re-annealing to each other. As helicase unwinds the DNA, torsional strain occurs on the DNA molecule. The enzyme DNA gyrase relieves this strain. Both single strands of DNA are templates for the creation of the duplicate strand of DNA. DNA replication is said to be semi-conservative because each strand of DNA consists of both an old strand and a newly synthesized strand; therefore, the copied DNA is a template for DNA replication.
Suman K.
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