What factors promote the fidelity of replication during synthesis of the leading strand of DNA? prevention of mismatched nucleotides at the replication fork by topoisomerase Watson-Crick base pairing between the template and leading strand breaks that occur in the leading strand are repaired by DNA ligase removal of the RNA primers between Okazaki fragments by DNA polymerase I removal of wrongly inserted nucleotides by the 3'-exonuclease activity of DNA polymerase III O O O 0

What factors promote the fidelity of replication during synthesis of the leading strand of DNA? prevention of mismatched nucleotides at the replication fork by topoisomerase Watson-Crick base pairing between the template and leading strand breaks that occur in the leading strand are repaired by DNA ligase removal of the RNA primers between Okazaki fragments by DNA polymerase I removal of wrongly inserted nucleotides by the 3'-exonuclease activity of DNA polymerase III O O O 0

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter8: The Structure, Replication, And Chromosomal Organization Of Dna

Section: Chapter Questions

Problem 23QP: How does DNA replication occur in a precise manner to ensure that identical genetic information is...

See similar textbooks

Similar questions

How does DNA replication occur in a precise manner to ensure that identical genetic information is put into the new chromatid? See Figures 8.12 and 8.13. FIGURE 8.12 In DNA replication, the two polynucleotide strands uncoil, and each is a template for synthesizing a new strand. A replicated DNA molecule contains one new strand and one old strand. This mechanism is called semiconservative replication. FIGURE 8.13 A close-up look at the process of DNA replication. (a) As the strands uncoil, bases are added to the newly synthesized strand by complementary base pairing with bases in the template strand. The new bases are linked together by DNA polymerase. (b) DNA synthesis can proceed only in the 5 3 direction; newly synthesized DNA on one template strand is made in short segments and linked together by the enzyme DNA ligase.
During DNA replication, the function of RNA primers is to Group of answer choices serve as a binding site for DNA ligase separate the two strands of the double helix to open replication "bubbles" serve as starting points for DNA strand elongation by DNA polymerase in the 3' - 5' direction prevent new-separated strands of DNA from rejoining serve as starting points for DNA strand elongation in the 5' - 3' direction by DNA polymerase
During DNA replication in E. coli, which enzyme forms the phosphodiester bond between an RNA primer and the first incoming deoxyribonucleotide for an Okazaki fragment on the lagging strand? topoisomerase DNA polymerase III DNA helicase DNA polymerase II DNA ligase
What is the difference between the leading strand and the lagging strand in DNA replication? There are different DNA polymerases involved in elongation of the leading strand and the lagging strand. The leading strand is synthesized continuously in the 5' → 3' direction, while the lagging strand is synthesized discontinuously in the 5' → 3' direction. The leading strand requires an RNA primer, whereas the lagging strand does not. The leading strand is synthesized in the 3' → 5' direction in a discontinuous fashion, while the lagging strand is synthesized in the 5' → 3' direction in a continuous fashion.
Which of the following statements about the DNA replication is false? a. Synthesis of the new DNA strands is form 39 to 59 b.Synthesis of the new DNA strands is from 59 to 39 c. DNA Unwinds, primase adds RNA primer, DNA polymerases synthesize the new strand and remove the RNA primer d. Many initiation points exist in each eukaryotic chromosome. e. Okazaki fragments are synthesized in the opposite direction from the direction in which the replication for moves.
1 2 3 4 5 6 7 8 9 The gaps between the DNA fragments are sealed by DNA ligase Elongation of both the lagging and the leading strand Topoisomerase binds at the region ahead of the replication fork Primase synthesizes RNA primers RNA primers are removed and gaps are filled by DNA pol I DNA unwinds at the origin of replication DNA polymerase III starts adding nucleotides Helicase opens up the DNA-forming replication forks Single-strand binding proteins coat the DNA Arrange the processes involved in DNA replication
During DNA replication in E. coli, which enzyme forms the phosphodiester bond between an RNA primer and the first incoming deoxyribonucleotide for an Okazaki fragment on the lagging strand? topoisomerase DNA polymerase III DNA helicase DNA polymerase II DNA ligase Heterogeneous nuclear RNA is typically characterized by which of the following features? it is more common in prokaryotes than in eukaryotes it contains introns, but no exons it contains more exons than introns it contains exons, but no introns it contains more introns than exons
A gene encoding one of the proteins involved in dna replication has been inactivated by a mutation in a cell. in the absence of this protein, the cell attempts to replicate its dna. What would happen during the dna replication process if each of the following proteins were missing?a. DNA polymerase B. DNA ligasec. Sliding clamp for DNA polymerased. nuclease that removes RNA primerse. DNA helicase F. primase
Please match the following enzymes with their correct functions. Primase, Gyrase, Ligase, Polymerase, Helicase, Topoisomerase 1.Unwinds DNA at the replication fork. 2.Makes and reseal breaks in the double-helical DNA to release the torque that builds up as a result of unwinding at the replication fork. 3.Synthesizes a short RNA to provide a 3’ -OH group for the attachment of DNA nucleotides. 4.Removed RNA primers and replace them with DNA. 5.Joins Okazaki fragments.
How does the enzyme telomerase meet the challenge of replicating the ends of linear chromosomes? It adds a single 5' cap structure that resists degradation by nucleases. It adds numerous GC pairs, which resist hydrolysis and maintain chromosome integrity. It causes specific double-strand DNA breaks that result in blunt ends on both strands. It catalyzes the lengthening of telomeres, compensating for the shortening that could occur during replication without telomerase activity.
The purpose of DNA gyrase in replication is: to relieve positive supercoiling induced by unwinding the DNA during replication. to induce tighter coiling in supercoils. to remove the RNA primers from the lagging strand at each Okazaki fragment to start unwinding and separate the DNA to initiate replication to provide energy to remove a diphosphate fragment from each nucleoside triphosphate.
During eukaryotic DNA replication, _________ synthesizes short RNA primers. The primers provide a 3'-OH group to which DNA nucleotides are be added by DNA polymerase. DNA gyrase (topoisomerase) DNA helicase DNA ligase primase