You have a DNA sequence of 1400 bp. To characterize it, you decide to make a restriction map. Cutting with the first enzyme, you show by electrophoresis that the fragments produced are 400 and 1000 bp, respectively. After using the second enzyme, you recover 600-bp and 800-bp fragments. After treatment with both enzymes, fragments were 200, 400, and 800 bp. Draw the correct restriction map.

You have a DNA sequence of 1400 bp. To characterize it, you decide to make a restriction map. Cutting with the first enzyme, you show by electrophoresis that the fragments produced are 400 and 1000 bp, respectively. After using the second enzyme, you recover 600-bp and 800-bp fragments. After treatment with both enzymes, fragments were 200, 400, and 800 bp. Draw the correct restriction map.

Biology: The Unity and Diversity of Life (MindTap Course List)

15th Edition

ISBN:9781337408332

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter15: Studying And Manipulating Genomes

Section: Chapter Questions

Problem 16SQ: Match the method with the appropriate enzyme. _____ PCR a. Taq polymerase _____ cutting DNA b. DNA...

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Match the method with the appropriate enzyme. _____ PCR a. Taq polymerase _____ cutting DNA b. DNA ligase _____ cDNA synthesis c. reverse transcriptase _____ DNA sequencing d. restriction enzyme _____ pasting DNA e. DNA polymerase (not Taq)
1. (a) Restriction sites are usually ______. Recombinant DNA Technology Restriction enzymes Ligase Palindromic sequences (b) Involves joining a donor DNA fragment of interest to a vector Recombinant DNA Technology Restriction enzymes Ligase Palindromic sequences
1. Given the following restriction endonucleases and the sequences of their corresponding restriction sites, which would be LEAST useful for cutting the plasmid and the foreign DNA to be inserted? [The arrows indicate where cuts are made.] (see img) a. EcoRI b. HindIII c. HaeIII d. BamHI 2. EcoRI and HindIII are two different restriction enzymes. If the DNA from two different sources were cut with either EcoRI or HindIII, which of the cut DNA fragments would NOT join together easily so that they could be sealed with ligase? a. E. coli DNA cut with EcoRI and human DNA cut with HindIII b. E. coli DNA cut with HindIII and mouse DNA cut with HindIII c. human DNA cut with EcoRI and chimpanzee DNA cut with EcoRI d. mouse liver DNA cut with HindIII and mouse kidney DNA cut with HindIII
1. If you forgot to add nucleotides to your PCR master mix, which control reaction tube would have results that are different than they would be if you had prepared them correctly? 7. If you found that there was DNA amplification in your negative control tube, what could be an explanation for that result?
1. What are restriction enzymes.2. Give 5 restriction enzymes and its source.3. What is a restriction map.4. Explain each step used in restriction mapping.STEP 1: Preparation of DNA for restriction analysis.STEP 2: Restriction digestion of DNA.STEP 3: Separation of restricted DNA.STEP 4: Collecting data.STEP 5: Construction of restriction map
1. Write if the statement is true and modify the statement with the correct answer if its false a.White colonies represent those bacteria that do not express the genes for beta-galactosidase because restriction enzymes have cut the gene and ligase have not repaired the break b.Antibiotic resistance genes in bacterial transformation are used as marker genes because of ease of detection of transformants. c. Bacterial transformation simply means the insertion of a recombinant plasmid into a bacterial cell.
Some restriction enzymes produce DNA fragments with overhanging stretches called sticky ends on each strand. Sticky ends are useful in making recombinant DNA because Select one: a. Sticky ends contain the exact same nucleotides that allows fragments to splice together. b. Sticky ends contain nucleotides with complementary bases that allows fragments to splice together. c. Sticky ends contain the exact same nucleotides that can form hydrogen bonds. d. Sticky ends contain nucleotides with complementary bases that can form hydrogen bonds.
2. Which of these statements is INCORRECT about restriction enzymes Restriction enzymes form phosphodiester bonds when DNA are assembled Palindromic sequences are recognized by restriction enzymes Restriction enzymes recognize blunt ends Restriction enzymes recognize sticky ends Restriction enzymes originated from bacteria
1. What is the function of the DNA polymerase enzyme in the PCR? 2. What natural process is PCR based on?
On the gel shown below are four DNA samples. Samples A to C are taken from tissues of landslide victims that are being identified, while sample D came from a hair sample brought by a mother looking for the remains of her son. (see img) i. If similar band patterns in a gel are created using the same restriction enzyme, what does that tell you about the DNA sequence of the samples? ii. In sample C, only two fragments were created. How many restriction sites (regions where enzymes cut) are present in sample C?
1. Briefly explain why the total size of the pMBBS plasmid in the Restriction Enzymes practical is 3000bp (base pairs) 2. Briefly explain why the cut sites on the pMBBS plasmid in each Restriction Enzymes (EcoRI, BamHI, and XhoI) just 1 each 3. Briefly explain what led to the 5 fragments formed which linked to the 500bp, 1000bp, 1500bp, 2000bp, 2500bp sizes
In Cohen-Boyer’s recombinant DNA procedure, ___i___ must be used for both the bacterial DNA and the amphibian DNA ___ii___ a) the same restriction enzyme; so that the restriction sites are identical in the DNA of each species b) different restriction enzymes; So that the genes outside the restriction site are maintained c) different restriction enzymes; to ensure that the newly introduced genes are maintained in the bacterial DNA d) the same restriction enzyme; to ensure that the newly formed DNA can replicate