which statement best describes a step in dna replication
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DNA Replication and Repair Replication Forks and Origins of Replication. The first step in DNA replication is the separation of the two DNA strands that make up the helix that is to be copied. DNA Helicase untwists the helix at locations called replication origins. The replication origin forms a Y shape, and is called a replication fork.
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- Explain semi-conservative replication. Prior to cell division, a cell must make a copy of its DNA to pass along to the next generation. Copying DNA is called “replication”. Rather than build a DNA molecule from scratch, the new DNA is composed of one old DNA strand (used as the template) and one brand new strand.
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- The first, and potentially most important, step of DNA replication  is unzipping the DNA through enzymes. This allows more nucleotides  to be attached to the halves of the D…NA, to create more. Answered by The WikiAnswers® Community. Making the world better, one answer at a time.
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DNA replication In a cell, DNA replication begins at specific locations, or origins of replication, in the genome. Unwinding of DNA at the origin and synthesis of new strands results in replication forks growing bi-directionally from the origin. A number of proteins are associated with the replication fork to help in the initiation and continuation of DNA synthesis. Most prominently, DNA polymerase synthesizes the new strands by adding nucleotides that complement each (template) strand. DNA replication occurs during the S-stage of interphase.
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- DNA replication is the process by which DNA makes a copy of itself during cell division.1  The first step in DNA replication is to ‘unzip’ the double helix structure of the DNA molecule. Chunks of DNA, called Okazaki fragments, are then added to the lagging strand also in the 5’ to 3’ direction. 2  This type of replication is called discontinuous as the Okazaki fragments will need to be joined up later.
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What Happens During DNA Replication? Semi-conservative replication is the process of creating two copies of DNA, with both copies consisting of an original and a new strand. This process creates enough genetic information to divide among two cells when cell division occurs.
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The Biochemical Reactions DNA Replication. Before a cell can divide, it must duplicate all its DNA. In eukaryotes, this occurs during S phase of the cell cycle. DNA replication begins with the unzipping of the parent molecule as the hydrogen bonds between the base pairs are broken.
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Cells Can Replicate Their DNA Precisely In both cases, replication occurs so quickly because multiple polymerases can synthesize two new strands at the same time by using each unwound strand from the original DNA double helix as a template. One of these original strands is called the leading strand, whereas the other is called the lagging strand.
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- 3 DNA replication: ¥Complementary base pairing produces semiconservativereplicationÐDouble helix unwindsÐEach strand acts as templateÐComplementary base pairing ensures that T signalsaddition of A on new strand, and G signals addition of CÐTwo daughter helices produced after replication.
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- Quick Answer. Replication is the process by which DNA is copied during mitosis and meiosis; transcription is the process by which RNA is synthesized with DNA as a template. These processes have some fundamental similarities, but they differ considerably. Continue Reading.
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What Is DNA Replication? - Conservative, Semi-Conservative & Dispersive Models First, we'll assume the dispersive model correctly describes DNA replication. In dispersive replication, DNA is copied in short chunks, and the result is a molecule that alternates pieces of parent DNA with daughter DNA. After one replication, the new molecule would be 50% parent and 50% daughter DNA.hey called this the semi-conservative model, because half of the parent DNA was conserved in each new DNA molecule. Scientists looked at the double helix of DNA and wondered how in the world it could possibly open itself up without getting tangled or torn apart.
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Chapter 25 - Dna Structure And Gene Expression Which of the following statements about DNA replication is NOT correct? A) Unwinding of the DNA molecule occurs as hydrogen bonds break. B) Replication occurs as each base is paired with another exactly like it. C) The process is known as semi-conservative replication because one old strand is conserved in the new molecule. D) The enzyme that catalyzes DNA replication is DNA polymerase.
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Which statement best describes the phase of the cell Which statement BEST describes the phase of the cell cycle shown? The cell is in prophase of mitosis because the number of chromosomes has doubled. The cell is in prophase I of meiosis because of the number of chromosomes has doubled. The cell is in telophase of mitosis because the cell is separating and contains two copies of each chromosome. The cell is in telophase of meiosis because the cell is separating and contains two copies of each chromosome.
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DNA replication DNA replication is the process of copying a double-stranded DNA strand, prior to cell division (in eukaryotes, during the S phase[?]).he two resulting double strands are identical (if the replication went well), and each of them consists of one original and one newly synthesized strand. This is called semiconservative replication. The process of replication consists of three steps, initiation, replication and termination.
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- DNA Replication. DNA replication is semi-conservative, one strand serves as the template for the second strand. Furthermore, DNA replication only occurs at a specific step in the cell cycle. The following table describes the cell cycle for a hypothetical cell with a 24 hr cycle. The DNA molecule is unwound and prepared for synthesis by the action of DNA gyrase, DNA helicase and the single-stranded DNA binding proteins. 2  A free 3'OH group is required for replication, but when the two chains separate no group of that nature exists.
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- patterns of rape: acquaintance v stranger, premeditated nature, reactions of victims, legal reforms, culture of rape, characteristics of child molesters, prison rape, pedophilia in the priesthood. Essay questions. Discuss the difference between deviant behavior and crime.
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- A summary of DNA replication from DNA Replication at ThinkQuest. In general, DNA is replicated by uncoiling of the helix, strand separation by breaking of the hydrogen bonds between the complementary strands, and synthesis of two new strands by complementary base pairing. Replication begins at a specific site in the DNA called the origin of replication.
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In one paragraph, explain the process of DNA replication!!!? 1 DNA replication begins with the unzipping of the parent molecule as the hydrogen bonds between the base pairs are broken.  Once exposed, the sequence of bases on each of the separated strands serves as a template to guide the insertion of a complementary set of bases on the strand being synthesized.
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- The replication process relies on the fact that each strand of DNA can serve as a template for duplication. DNA replication initiates at specific points, called origins, where the DNA double helix is unwound. A short segment of RNA, called a primer, is then synthesized and acts as a starting point for new DNA synthesis.
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What is DNA replication? DNA replication is the process by which DNA makes a copy of itself during cell division. 1  The first step in DNA replication is to ‘unzip’ the double helix structure of the DNA molecule. The separation of the two single strands of DNA creates a ‘Y’ shape called a replication ‘fork’. 2  The two separated strands will act as templates for making the new strands of DNA. 3  One of the strands is oriented in the 3’ to 5’ direction (towards the replication fork), this is the leading strand.
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Cells Can Replicate Their DNA Precisely Replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. DNA replication is one of the most basic processes that occurs within a cell.Each time a cell divides, the two resulting daughter cells must contain exactly the same genetic information, or DNA, as the parent cell. To accomplish this, each strand of existing DNA acts as a template for replication.Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment.o accomplish this, each strand of existing DNA acts as a template for replication. Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment.
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- DNA replication is semiconservative and proceeds in three major stages: Unwinding-DNA molecules consists of two individual strands of linked nucleotides coiled around each other in a double helix.
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- Unzip DNA. Help Window : The first step of replication is unzipping the DNA molecule. This will divide the molecule lengthwise. Select Unzip to divide the molecule. Description: Selecting the Unzip button causes the DNA molecule to split lengthwise. What Happened Window: In a real cell, the molecule unwinds from spools made of protein, then untwists. (Here the molecule is already unwound and untwisted.) The DNA now resembles a ladder.
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- dna replication. can be summarised as the two helical strands of dna unravelling through the action of enzymes and the corresponding nitrogenous bases of each being matched up … (A-T, C-G) to form two identical strands. 2 people found this useful.
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- DNA replication is one of the most basic processes that occurs within a cell. Each time a cell divides, the two resulting daughter cells must contain exactly the same genetic information, or DNA, as the parent cell. To accomplish this, each strand of existing DNA acts as a template for replication.
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DNA Replication Steps DNA replication of Eukaryotes (cells with a nucleus) occurs stepwise. Each step needs different enzymes. The DNA replication steps can be broken down as: A notch is made by DNA gyrase. This looks like a bubble under a microscope, called Replication Bubble. Cracking up the hydrogen bonds in the double helix is the vital step and it occurs where more A-T bases exist.