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At the start of DNA replication, an enzyme called topoisomerase untwists the double helix nature of DNA while another enzyme called helicase literally breaks the two halves of the DNA apart. Once the DNA has been split, RNA primase attaches an RNA primer to one of the exposed nucleotides. It is then the job of the DNA polyemrase to go down the DNA strand from the 3' to 5' direction starting at the primer, adding the complementary base to each nucleotide found along the strand. This creation of new nucleotides continues down the DNA until the polymerase reaches another polymerase or the end of an already reconstructed chain. In the mean time, another polymerase has replaced the RNA primer with a corresponding DNA nucleotide. Everything is then finished up as ligase enzymes bind all of the various fragments of DNA together.
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Okazaki fragments are joined together by?
During DNA replication Okazaki fragments are joined together by DNA polymerase. Remember that Okazaki fragments start with an RNA primer so RNAse H is need to remove the primer follwed by DNA plymerase to add nucleotides and finally DNA ligase to seal the single strand nick.
When does replication go through the cell cycle?
DNA replication occurs during the S stage of interphase. The S means synthesis and refers to the synthesis of new DNA during DNA replication.
What does DNA replication make?
DNA replication produces a copy of the DNA. At the same time the cell in which the DNA is to be found splits into two with a copy of the DNA in each. DNA replication is caused by cell replication during the process of mitosis.
What enzyne produces a new DNA strand during DNA replication?
DNA polymerase is the enzyme responsible for producing a new DNA strand during DNA replication. It catalyzes the addition of nucleotides to the growing DNA chain, using the existing DNA strand as a template.
What 2 proteins are used during DNA replication?
The two proteins used during DNA replication are DNA polymerase and DNA helicase. DNA polymerase adds nucleotides to the growing DNA strand, while DNA helicase unwinds the double helix structure of DNA to expose the template strands for replication.
Okazaki fragments are joined together by?
During DNA replication Okazaki fragments are joined together by DNA polymerase. Remember that Okazaki fragments start with an RNA primer so RNAse H is need to remove the primer follwed by DNA plymerase to add nucleotides and finally DNA ligase to seal the single strand nick.
Where does DNA polymerase add nucleotides during the process of DNA replication?
DNA polymerase adds nucleotides to the growing DNA strand at the replication fork during the process of DNA replication.
DNA is copied during a process called?
DNA is copied during a process called DNA replication. This process occurs in the nucleus of a cell and involves making an exact copy of the original DNA molecule. DNA replication is essential for cell division and passing genetic information from one generation to the next.
What is copies during replication?
A cell's DNA is copied during replication.
In what direction does DNA polymerase add nucleotides during DNA replication?
DNA polymerase adds nucleotides in the 5' to 3' direction during DNA replication.
When does DNA replication occur during the cell cycle?
DNA replication occurs during the S phase of the cell cycle.
How do replication bubbles form during the process of DNA replication?
During DNA replication, replication bubbles form when the DNA double helix unwinds and separates into two strands. Enzymes called helicases unwind the DNA, creating a replication fork where new DNA strands can be synthesized. This process allows for multiple replication bubbles to form along the DNA molecule, enabling efficient and accurate replication.
Which enzyme removes the RNA primers during DNA replication?
The enzyme that removes RNA primers during DNA replication is called DNA polymerase I.
When does replication go through the cell cycle?
DNA replication occurs during the S stage of interphase. The S means synthesis and refers to the synthesis of new DNA during DNA replication.
What enzyme connects nucleotides together during DNA replication?
The Ligase connects nucleotides together during DNA replication.
In what direction does DNA polymerase exclusively travel during the process of DNA replication?
DNA polymerase exclusively travels in the 5' to 3' direction during the process of DNA replication.
What does DNA replication make?
DNA replication produces a copy of the DNA. At the same time the cell in which the DNA is to be found splits into two with a copy of the DNA in each. DNA replication is caused by cell replication during the process of mitosis.
