Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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What is o The DNA running both ways from one origin of replication to the endpoints, where it merges with DNA from adjoining replication forks?
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- What is the importance of complementary base pairing to DNA replication?arrow_forward1) A bacterial chromosome contains 6.4 million nucleotides of DNA. If synthesis at each replication fork occurs at a rate of 1800 nucleotides per second, how many minutes will it take to completely replicate the chromosome with theta replication? 2) What different mRNA sequences can code for a polypeptide chain with the amino acid sequence Met-Trp-Ile? (Include the stop codon)arrow_forwardDoes E. coli chromosomal replication always start at one particular site? What is called? If you were given the DNA sequence of E. coli chromosome, would you be able to identify where E. coli chromosomal replication starts? What is the end of E. coli chromosome replication?arrow_forward
- Where does is the origin of replication?arrow_forwardDefine DNA replication/synthesis and semiconservative replication. In addition, describe and/or define the role(s) of each of the following in the process of DNA replication/synthesis: DNA template strand, 5’ and 3’ ends, DNA helicase, DNA polymerase, single-strand binding proteins, topoisomerase, primase, Okazaki fragments, leading strand and lagging strand.arrow_forwardIn DNA replication, the role of topoisomerase is to Question 11 options: a) "unzip" the double stranded DNA in front of DNA polymerase. b) maintain the single stranded DNA. c) supercoil the DNA after the replication fork has passed. d) relieve supercoil tension in the DNA in front of the replication fork.arrow_forward
- If the gene for primase were mutated so that no functional primase was produced, what would be the effect on theta replication? On rolling circle replication?arrow_forwardHow is DNA replication initiated in prokaryotes and eukaryotes? How is this process controlled and regulated?arrow_forwardHow is DNA synthesis in the Polymerase Chain reaction similar to, or different from, DNA synthesis during genome replication in cells?arrow_forward
- When a cell is to divide, its DNA must be replicated (copied). a) Indicate the main participating components and their functions. b) Why is it important that the replication goes right and that relatively few mutations occur during the replication?arrow_forwardWhich protein is needed to lay down a segment of RNA complementary to the DNA before replication can begin? O RNA pelymerase NI O primase O helicase O DNA polymerase lII O topoisomerasearrow_forwardA region of DNA has six copies of a trinucleotide repeat. During one round of replication, the template strand slips as shown in the diagram. How many repeats will the DNA have if the newly synthesized strand is used as a template in the next round of replication? 1 5'-CAG 3'-GTC GTC 4 2 GTCH 3 2 CAG CAG GTC 3 GTC 5 4 CAG-3' GTC -5' 6 Next round of DNA replicationarrow_forward
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