You do a PCR reaction,run a sample of the product on a gel,and use a dye to visualize the bands. Youexpect a single product of 300 bp, whichyou observe, but you also see a band ofabout 550 bp. Can you suggest a reasonwhy? Does the size of the unexpectedband indicate anything about your targetsequence?

You do a PCR reaction,run a sample of the product on a gel,and use a dye to visualize the bands. Youexpect a single product of 300 bp, whichyou observe, but you also see a band ofabout 550 bp. Can you suggest a reasonwhy? Does the size of the unexpectedband indicate anything about your targetsequence?

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter15: Genomes And Genomics

Section: Chapter Questions

Problem 6QP: Which of the following best describes the process of DNA sequencing? a. DNA is separated on a gel,...

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Similar questions

You have added 4 μl of a 5 μM stock primer to a 25 μl PCR reaction. What is the amountof primer in nanomol that you have added to the reaction?
How does what you see on the acrylamide gel reflect what is presented on a sequencing chromatograph?
1) Prepare the following enzymatic reaction, present it in tabulated form. In a final volume of 30 ul, where buffer 4 (10 ml). How much volume of each reagent would be used and how much of water? Is there any problem? 2) The DNA pol 1 enzyme comes at a concentration of 50,000 U/ml. You have to prepare a 50 ug PCR reaction where you must use 0.05 U/ml reaction. You add 10 ul of PCR buffer, 2 ng of tempered DNA that is at a concentration of 0.5 ng/ul, primers (which are at 200 mM) so that each one remains at a concentration of 200 uM, Mg+2 that is 5 mM (10 X), enzyme and water. Present the table of all the reagents included in the reaction, the volumes of each one in ul. Present where the initial and final concentration of each reagent applies. Assume you have micropipettes for all values.
During agarose gel electrophoresis, why does DNA move through the gel when electric current is applied? because DNA is negatively charged because a charged chemical from the loading buffer is bound to the DNA because DNA is positively charged because DNA absorbs electricity
Why was it necessary to mash the strawberries extensively with your hands? (hint: you wouldn’t have to do this step with an animal cells). Why do we treat the cells with soap when conducting DNA extraction? And why do we add salt when doing the DNA extraction?
Our PCR samples already contain loading dye, but sometimes this isn’t the case. If your samples didn’t already contain dye and you wanted to load your PCR sample onto an agarose gel, you’d need to add loading dye to the proper concentration. There is a 6X loading dye available for use; how many µl of this loading dye will you add to 10 µl of your sample so that it is at a 1X working concentration? Show your work.
In the Hershey–Chase experiment, the radioactive label 32P was present inside bacterial cells (i.e., in the pellet), whereas the radioactive label 35S waspresent outside bacterial cells (in the supernatant). What would the researchers have concluded had the reverse been true, that is, if the radioactive label 35S were inside the cells and the radioactive label 32P were outside the cells?
How many microliters of pGLO plasmid will you need for a PCR reaction is you need 200 nanograms and the plasmid concentration is 0.05 micrograms/microliter?
You are given the following DNA fragment to sequence:5'-GCTTAGCATC-3'. You first clone the fragment in bacterialcells to produce sufficient DNA for sequencing. You isolate theDNA from the bacterial cells and carry out the dideoxy-sequencingmethod. You then separate the products of the polymerizationreactions by gel electrophoresis. Draw the bands that shouldappear on the gel from the four sequencing reactions.
If you wanted to create recombinant DNA using this enzyme(3' T A 5'), would you have to cut both samples of DNA with this enzyme, or could you use two different restriction enzymes? Explain.
During gel electrophoresis, in what direction (toward which electrode) does DNA move toward? O positive O negative O both O either one
Please help me