1. You make a recombinant plasmid vector that contains an insert of a gene you are interested in studying (see below on left). After making your recombinant vector you run it on an agarose gel to check it (See below on right). You run some of the uncut vector and see 3 bands (Uncut lane). You also cut some recombinant vector with both restriction enzymes BamHI and HindIII and run this on the gel too (Cut lane). Agarose Gel Recombinant Plasmid vector with insert -ve BamHI insert Hindi- bp 5,000 2,300 2,000 1,800 1,000 500 300 DNA Marker Uncut A B Cut D +ve

1. You make a recombinant plasmid vector that contains an insert of a gene you are interested in studying (see below on left). After making your recombinant vector you run it on an agarose gel to check it (See below on right). You run some of the uncut vector and see 3 bands (Uncut lane). You also cut some recombinant vector with both restriction enzymes BamHI and HindIII and run this on the gel too (Cut lane). Agarose Gel Recombinant Plasmid vector with insert -ve BamHI insert Hindi- bp 5,000 2,300 2,000 1,800 1,000 500 300 DNA Marker Uncut A B Cut D +ve

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter18: Dna Technologies: Making And Using Genetically Altered Organisms, And Other Applications

Section: Chapter Questions

Problem 3TYK: Why are antibiotic resistance markers such as ampR important components of bacterial plasmid cloning...

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1. Below is an illustration of two plasmids: the incomplete pKAN-R which contains the gene of interest (rfp), and the good plasmid vector pARA which contains the ampR gene for ampicillin resistance, the araC activator gene and the ori region. Based on this, how are you going assemble to create the desired recombinant plasmid containing all the necessary components? (Keywords: Identify correct restriction enzymes to use to create specific sticky end sequences that will only assemble with the final vector in one orientation)
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. 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
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?
You have a recombinant plasmid containing a vector and a segment of foreign DNA, both equal sizes. Draw a picture of this recombinant plasmid labeling foreign and vector regions. Where the foreign DNA meets the vector, there is a cut site for restriction enzyme ABC1. When the recombinant plasmid is cut by ABC1, how many fragments do you expect to be produced? Identify these fragments.
1. What two restriction sites are you going to use to clone your PCR product into the pL4440 plasmid? What are their DNA sequence? 2. State the primer sequence you will use to amplify the F27C1.7 gene ready to be cloned into the pL4440 plasmid? 3. How would you go about cloning this amplified DNA into pL4440? Using your knowledge of cloning list 5 important aspects of the method.
Human DNA and a particular plasmid both have sites that are cut by the restriction enzymes HindIII and EcoRI. To make recombinant DNA, the scientist should (a) cut the plasmid with EcoRI and the human DNA with HindIII (b) use EcoRI to cut both the plasmid and the human DNA (c) useHindIII to cut both the plasmid and the human DNA (d) a or b (e) b or c
Which of the following would you need to clone a goat? Choose all that apply a) A restriction enzyme b) A surrogate mother c) A plasmid vector (or other type of DNA vector, e.g. phage, BAC) d) A donor goat nucleus e) Human DNA f) DNA ligase g) An enucleated egg
An 9 kb circular plasmid is cut with the EcoRI restriction enzyme, and the reaction products are run on a DNA gel and stained with ethidium bromide. Bands of 1, 3 and 5 kb are seen. How many EcoRI sites are in the plasmid? Choose the one answer that is most correct. a) At least 2 b) At least 3 c) At least 1 d) None e) At least 4 f) At least 5
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.
You want to make a recombinant DNA in which aPCR product amplified from the human genome is inserted into a plasmid vector. The polylinker of thisvector includes recognition sites for the enzymesEcoRI (5′ G^AATTC 3′) and BamHI (5′ G^GATCC3′). (The ^ symbolizes the cut site in the DNA.) PCRprimers that could amplify the fragment of humanDNA are: 5′ GCTACTTCGCGTATTCCA 3′ and5′ CCCAAGTCCTAGCCGATA 3′.a. Describe in detail how these primers would need tobe modified to create a fragment of the human genome flanked by EcoRI sticky ends so that thisfragment could be cloned easily into the plasmidvector. You will need to consider the fact that mostrestriction enzymes, including EcoRI, cannot cutDNA if the restriction site is directly at the end ofthe DNA molecule; the restriction enzyme recognition site must be at least six base pairs distant fromthe end.b. Describe a potential feature of the PCR-amplifiedregion of the human genome that could prevent youfrom using the strategy you described in…
The figure below shows the recognition sequences and cleavage positions of three restriction enzymes.You plan to ligate DNA from two different sources. The target DNA is digested with BamHI,and the insert DNA is digested with BglII, and the resulting fragments mixed and incubatedwith DNA ligase. a) Write out the sequence (in double-stranded format) of the longest insert fragment that will result after BglII digestion, ensure the nature of the overhangs is clear.b) Write out the sequence (in double-stranded format) of the ligation product, with the insert fragment joined into the BamHI site of the target DNA. Use black for target sequences, and blue for insert sequences. c) Assume the ligation reaction was successful and you have generated a recombinant DNAmolecule. Which of the three enzymes listed above can be used to excise the insert DNAfrom the target? Motivate your answer.