You have accidentally torn the labels off two tubes (tube A and tube B), each containing a different plasmid, now you do not know which plasmid is in which tube. Fortunately, you have restriction maps for both plasmids, shown in Figure below. You have the opportunity to test just one sample from one of your tubes. By utilizing agarose gel electrophoresis technique, which restriction enzyme OR combination of restriction enzymes would you use in this experiment to determine which plasmid is found in which tube?

describe the two main parts of a plasmid DNA extraction and purification procedure including the purpose of each step

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

Using the Figure below briefly describe how the amplification can be used in the cloning process of DNA.

Restriction endonucleases are bacterial enzymes that cleave duplex (double-stranded) DNA at specific nucleotide sequences. The mode of replication of the animal virus SV40 has been investigated by using restriction endonucleases that cleave SV40 DNA into a number of unique segments. Like most viruses, SV40 DNA is circular. The map positions of the 11 fragments produced by a pair of restriction endonucleases are shown on the next page. Immediately following a 5 or 10 minute pulse of radioactively labeled thymidine, labeled SV40 molecules that have completed replication during the pulse are isolated. These newly replicated DNA molecules are digested by the restriction endonucleases and the resulting fragments are analyzed for the relative amounts of pulse label they contain. The results are in the table below. Assume that at the time the label was added there was a random population of replicating SV40 DNA molecules in all possible stages of synthesis. From the information given below,…

In the following "gene library" cloning experiment Digested genomic DNA AmpR gene TCR gene TCR is tetracycline resistant marker, AmpR is ampicillin resistant marker and BamHI is the unique restriction enzyme on plasmid. A PhD student digests/cuts the plasmids with BamHI restriction enzyme and the genomic DNA with EcoRI restriction enzyme. After performing the cloning experiment and obtaining colonies on a selection plate, the obtained cells will be ..... (Hint: this question is even more challenging; the PhD student was later demoted to an MSc student). a) resistant to ampicillin and tetracycline b) sensitive to tetracycline and ampicillin c) resistant to tetracycline and sensitive to ampicillin d) resistant to ampicillin and sensitive to tetracycline e) sensitive to ampicillin and tetracycline BamHI

The modifiedplasmid is reintroduced back into Rhizobium(step 4) and the genetically transformed bacteria are then selected based on the amp and lacZgenes present within the plasmid. The plasmid may or may not integrate the BBW resistancegene. The treated bacteria may or may not take up the modified plasmid.   a) Complete the table below with a yes or no in each space stating whether you would expect these bacteria to grow or not. Type of treated bacteria culture plate(no amp) Culture plate treated with ampicillin   Plasmid not taken up     Plasmid taken up (WithoutBBW resistancegene)     Plasmid taken up (WithBBW resistancegene)     B) Outline how the genetically transformed bacteria containing the BBW resistance gene can beselected based on the amp and lacZgenes present within the plasmid.