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DNA replication - Wikipedia
https://en.wikipedia.org/wiki/DNA_replication
The replication fork is a structure that forms within the long helical DNA during DNA replication. It is created by helicases, which break the hydrogen bonds …
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DNA Replication Fork: Definition & Overview - Study.com
https://study.com/academy/lesson/dna-replication-fork-definition-lesson-quiz.html
Sep 21, 2021 · A DNA replication fork looks like a fork in the road and is the place in a DNA molecule where DNA replication occurs. Explore the definition, structure and function, and an overview of a DNA ...
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DNA Replication- definition, enzymes, steps, mechanism, …
https://microbenotes.com/dna-replication/
Aug 02, 2020 · The replication fork is formed during DNA strand unwinding by the helicase enzyme which exposes the origin of replication. A short RNA primer is synthesized by primase and elongation done by DNA polymerase. The replication fork moves in the direction of the new strand synthesis. The new DNA strands are synthesized in two orientations, i.e 3 ...
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DNA Replication - SlideShare
https://www.slideshare.net/namarta28/dna-replication-11967263
Mar 11, 2012 · Newly replicated DNA is rapidly assembled into nucleosomes, and the preexisting and newly assembled histone octamers are randomly distributed to each arm of the replication fork. 37. DNA Synthesis and the Cell Cycle In animal cells, including human cells, the replication of the DNA genome occurs only during the synthetic or S phase. This is ...
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Mechanisms of DNA replication termination - PMC
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6386472/
Introduction. Genomic DNA replication can be divided into three general phases: (1) Initiation, in which the origin of DNA replication is unwound by the replicative DNA helicase (Figure 1A-B). (2) Elongation, in which forks copy the chromosome using semi-conservative DNA synthesis (Figure 1C-D). (3) Termination, when converging replication forks meet (Figure 1D-G).
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DNA replication fork speed underlies cell fate changes and …
https://www.nature.com/articles/s41588-022-01023-0
Mar 07, 2022 · To address whether slow replication dynamics is a feature of genuine totipotent cells, we measured replication fork speed in 2-cell-stage embryos in vivo (Fig. 1e).Notably, 2-cell-stage embryos ...
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DNA replication in 7 easy steps - BIOLOGY FOR LIFE
http://www.biologyforlife.com/uploads/2/2/3/9/22392738/10_dna_replication_pt2.pdf
–Helicase begins to unwind the DNA at the ORIGIN OF REPLICATION (a specific DNA nucleotide sequence) It’s common to only show one strands sequence of bases, since the other can be ... • Replication fork • Leading strand • Lagging strand • Okazaki fragment • DNA polymerase I • DNA ligase . 4. DNA polymerase III adds DNA nucleoside
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DNA Replication: Definition, and Significance - Embibe
https://www.embibe.com/exams/dna-replication/
Jun 10, 2022 · Attempt Mock Tests. 3. Formation of RNA Primer: At the free \(3’\) end of one strand and fork end of the second strand, a small strand of RNA called RNA primer is synthesised with the help of enzyme RNA polymerase or primase.RNA primer functions like \(5’\) end of the new strand to be synthesised. 4. Base Pairing: The two separated DNA strands in the area of …
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DNA Replication Mechanisms - Molecular Biology of the Cell
https://www.ncbi.nlm.nih.gov/books/NBK26850/
Initially, the simplest mechanism of DNA replication seemed to be the continuous growth of both new strands, nucleotide by nucleotide, at the replication fork as it moves from one end of a DNA molecule to the other. But because of the antiparallel orientation of the two DNA strands in the DNA double helix (see Figure 5-2), this mechanism would require one daughter strand to …
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An In-depth Look at the 7 Major Steps of DNA Replication
https://biologywise.com/dna-replication-steps
The unwinding of DNA may cause supercoiling in the regions following the fork. These DNA supercoils are relaxed by specialized enzyme called topoisomerase which binds to the DNA stretch ahead of the replication fork. It creates a nick in the DNA strand in order to relieve the supercoil. Leading Strand Synthesis
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