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RNA polymerase is the enzyme that connect the new nucleotides together and proofreads them.
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What enzyme is responsible for catalyzing the formation of the two new DNA strands?
DNA polymerases
What does semi-conservative model mean?
Refers to semi-conservative replication of DNA. One strand of the old DNA is used as a template to replicate the other, new, strand of DNA. Thus you have four from two, but two of the four are old strands while the other two strands are new. Thus the name semi-conservative replication.
What makes one DNA molecule different from another one?
-Copy number variation Where approximately 12% of the human genome is varied as some starnds of DNA are repeated or removed -SNP Simple Nucleotide Polymorphisms. Random variations in a gene -Alleles One or more alternate variations of a gene
During the duplication of DNA in what part of the cell are new strands synthesized from a supply of nucleotides?
nucleus
When does the cell grow and make a copy of DNA?
The whole cell cycle is divided into 4 phases: (1) G1 phase = growth period, (2) S phase = synthesis of the DNA, (3) G2 phase = correct errors and prepare to divide, and (4) Mitosis. Synthesis phase is very critical because this is the stage where the whole DNA molecule is duplicated by the process of replication. G1 is the shortest period of all stages.
DNA replication involves producing new copies of DNA molecules. How many individual DNA strands exist after one molecule of DNA has been replicated?
After one DNA molecule has been replicated, there are two identical DNA molecules, each consisting of one original strand (template) and one newly synthesized strand. This process ensures that each new DNA molecule contains one strand from the original molecule, maintaining the genetic information.
What are the process of DNA replication in a diagram?
DNA replication begins with the separation of the double helix into two single strands by helicase. Primase then synthesizes RNA primers on the single strands. DNA polymerase adds complementary nucleotides to each template strand, synthesizing new DNA strands. Finally, DNA ligase joins the Okazaki fragments on the lagging strand and the new strands are proofread for accuracy.
At the end of replication each new DNA molecule is composed of?
After DNA replication, each new molecule has one strand of the original DNA molecule and the other strand is composed of new nucleic acids. This is due to the semi-conservative replication of DNA.
When DNA replicates one of the two strands in each daughter DNA molecule is new discuss what is required for this replication and why it is important that the DNA is copied exactly.?
DNA replication requires enzymes that unzip the double helix, create new complementary strands, and proofread for errors. It is important for DNA to be copied exactly to maintain genetic information integrity and prevent mutations. The fidelity of DNA replication ensures that genetic information is accurately passed down to offspring and functioning properly in cells.
What are the phases when a cell's DNA is replicated?
The phases of DNA replication are initiation, where the DNA double helix is unwound and the replication bubble is formed, elongation, where new nucleotides are added to the growing DNA strands, and termination, where replication is completed and the newly synthesized DNA strands are proofread for accuracy.
What is copied during rplication?
During DNA replication, the entire DNA molecule is copied. This involves separating the two strands of the DNA double helix and creating two new complementary strands using the existing strands as templates. The end result is two identical copies of the original DNA molecule.
When a DNA molecule replicates are the 2 new strands identical?
Yes, they both are [all but] Identical.
The location where the DNA molecule becomes unzipped is called?
The location where the DNA molecule becomes unzipped is called the replication fork. This is where the two strands of the double helix separate during DNA replication to allow for the synthesis of new complementary strands.
How many strands of DNA are used to make complementary strands of DNA?
Two strands of DNA are used to make complementary strands of DNA. One original strand serves as a template for the synthesis of a new strand, resulting in a double-stranded DNA molecule with base pairing between the original and newly synthesized strands.
What happens when a DNA molecule unzips?
DNA splits, and mRNA and tRNA are there to create new strands for the new replicated DNA strand. This is what happens prior to mitosis in cell division.
A zebra cell is just about to replicate its DNA What happens first?
First, the DNA double helix unwinds and separates into two strands. Then, each strand serves as a template for the synthesis of a new complementary strand. This process is carried out by enzymes that help assemble the new DNA strands.
How do DNA expand?
DNA expands through a process called replication, where the double-stranded DNA molecule separates into two strands, and each strand serves as a template for the synthesis of new complementary strands. Enzymes known as DNA polymerases add nucleotides to the growing new strands, resulting in two identical DNA molecules.
