Preview

Reverse Transcription Polymerase Chain Reaction Lab Report

Better Essays
Open Document
Open Document
1169 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Reverse Transcription Polymerase Chain Reaction Lab Report
1.INTRODUCTION

The biological science field has been progressing in such a brisk motion ever since it was introduced to the world. Renowned scientists and inspiring researchers continuously looking for the loopholes and rooms for improvements for the betterment of today’s society. And all this is circling on the foundation of the field itself that is gene. Gene is a part, a tiny piece of genetic material in a code and world-widely known as DNA. In other words, it is the functional unit of heredity and acts as instruction to make molecules in later process which is protein that dictates cell function. Every person has two copies of each gene - inherited from each parent and they are located on chromosomes.

The genes cannot be used unless they
…show more content…
It is then separated and sorted in terms of size by gel electrophoresis. Afterwards, it is transferred onto a membrane called blotting. It is baked at 80ºC before labeling of DNA probe for hybridization takes place. The sequence of the probe is made complementary to a specific RNA sequence in the sample. Moreover, a radioactive atom or a fluorescent dye is used as label on probe.

Reverse Transcription Polymerase Chain Reaction (RT)-PCR
Employing PCR-based procedure in analyzing RNA would require cDNA to be synthesized using reverse transcription. When reverse transcription and polymerase chain reaction are combined together, it will permit detection of low abundance RNAs. RT-PCR is distinct from Real Time Polymerase Chain Reaction (qPCR). The latter measures the amplification of DNA in quantitative way and it uses fluorescent dyes.

The process begins by heating the cDNA at 95ºC to denature it. Thereof, the hydrogen bonds between complementary strands are disrupted. It then produces single-stranded molecules. In subsequent step, annealing of primers that are complementary to the target sequence is realized by lowering the temperature. The final step is extension in which DNA synthesis happens. Temperature of choice in the last step is usually 72ºC and it allows the synthesis of a new strand that complements to the
…show more content…
Revelation of the 3′-most restriction site anchored to the oligo(dT) bead is done after synthesized cDNA on oligo(dT) is digested together with the anchoring enzyme NlaIII (AE). Then, different linkers are put into use in the ligation. Ditags are yielded when SAGE tags liberated from the oligo(dT) beads undergo separation, blunting and ligation. Last but not least, they are amplified using PCR, liberated from the linkers, purification of gel, serially ligated, cloned, and sequenced using an automated

You May Also Find These Documents Helpful

  • Good Essays

    78. Through the process of gel electrophoresis, DNA fragments are able to be separated. Gel electrophoresis is a method of separating and analysis DNA molecule fragments based on their size and charge. On end of the gel is given a positively charged end and one end is negatively charged. When an electric current is passed through the gel charged molecules move through it. Larger molecules move slower, moving a shorter distance, while smaller molecules move faster and traveler further. These DNA molecules are separated by size in the gel and dye is used to stain the fragments and make them more visible.…

    • 231 Words
    • 1 Page
    Good Essays
  • Satisfactory Essays

    First Lab 1 How Is It

    • 313 Words
    • 1 Page

    2. List the steps required to complete the gel electrophoresis process. The first step is to make the gel. The second step is to set up the gel apparatus. The third step is load the DNA sample into the gel. The fourth step is hook up the electrical current and run the gel. The last step is stain the gel and analyze the result.…

    • 313 Words
    • 1 Page
    Satisfactory Essays
  • Satisfactory Essays

    1.3.1 response

    • 620 Words
    • 3 Pages

    The enzyme scans DNA for this sequence and makes a cut as indicated by the arrows.…

    • 620 Words
    • 3 Pages
    Satisfactory Essays
  • Best Essays

    urificationKit.aspx?r=1745#Tabs=t2, Accessed 26th Nov 2011 Sambrook .J, Russell .W.D, 2001, Molecular Cloning: A laboratory Manual, 3rd Ed, Vol2, USA: Cold Spring Harbour Laboratory Press…

    • 4373 Words
    • 18 Pages
    Best Essays
  • Good Essays

    Ligation is the process of joining two DNA fragments or other molecules by a phosphate ester linkage with the action of enzyme. Ligation of DNA is process that involve the DNA of interest is inserted into the plasmid. This 3’-hydroxyl of DNA terminus are joined together with 5’-phosphoryl of another by phosphodiester bond. The ligation of DNA fragments usually performed by using T4 DNA ligase. All the reaction components such as ligation buffer, DNA insert, pGEM®-T, and T4 DNA ligase is mixed by gentle pipetting. The 2X rapid ligation buffer is used in this experiment to saving the ligation time. This ligation buffer contains ATP. ATP is used to catalyze the formation of phosphodiester bond and the reaction of restriction enzyme buffer. The recommended time and temperature of incubation when using 2X rapid ligation buffer are one hour at room temperature (24°C) and overnight at 4°C. In this overnight incubation at 4°C is applied to achieve maximum number of recombinants.…

    • 468 Words
    • 2 Pages
    Good Essays
  • Good Essays

    1 kb DNA ladder Used to estimate DNA fragments’ This was done by melting a solution composed of 0.7% agarose in 1x TBE and 0.005% ethidium bromide, and pouring the resulting liquid into comb-containing gel tray until the thickness reached about 6 mm. Once the gel had been allowed to cool for about 20 minutes, it was removed from the tray, placed in a horizontal gel apparatus, and immersed in 1x TBE buffer. Next, three different solutions were prepared from an aliquot of HindII digested lambda DNA and 3 microliters of 6x loading dye, an aliquot of EcoRI digested lambda DNA and 3 microliters of 6x loading dye, and 1 kb DNA ladder and 3 microliters of 6x loading dye. The resulting solutions were then transferred into separate wells within the gel, and the apparatus was connected to a constant current source (45mA) for 60 minutes. After producing clearly visible bands, the gel was taken out of the apparatus and photographed with an ultraviolet light box (Displayed in Figure…

    • 1568 Words
    • 7 Pages
    Good Essays
  • Powerful Essays

    Unit 5 Biology Aqa

    • 11564 Words
    • 47 Pages

    34 Section 16.3 – In vitro gene cloning – the polymerase chain reaction 36 Section 16.4 – Use of recombinant DNA technology…

    • 11564 Words
    • 47 Pages
    Powerful Essays
  • Powerful Essays

    Aim The aim of the experiment is to isolate purified genomic DNA from cheek cells, prepare the sample for PCR reaction, place prepared sample in agarose gel through a procedure called…

    • 2156 Words
    • 9 Pages
    Powerful Essays
  • Powerful Essays

    DNA plasmid has formed. The ligation process of the experiment and the goal of which to successfully ligate EGFP into…

    • 3716 Words
    • 22 Pages
    Powerful Essays
  • Good Essays

    bio 243 lab final notes

    • 1177 Words
    • 5 Pages

    · To extract the DNA, isopropanol was added which decreased the polarity of the solvent. The DNA was then extracted by allowing the DNA to wind around a glass rod.…

    • 1177 Words
    • 5 Pages
    Good Essays
  • Better Essays

    To do this, the steps found on page 105 of the Microbiology Lab Manual were conducted without and modifications to the steps. To do this, the remaining 20 microliters was added to a tube containing 100 microliters of CP buffer. Then, the whole sample of both the PCR and CP buffer are added to a blue tube positioned in a white tube. This tube was then centrifuged for one minute forcing and liquid into the white tube and keeping the DNA in the blue tube. Once the centrifuge is done, discard any liquid in the white tube into a waste beaker. Next, 700 microliters of wash duffer was added to the blue column and was then centrifuged for one minute to remove any excess liquid. The wash buffer contained ethanol which DNA is not soluble in meaning it won’t be washed out and will remain in the blue column. Once the centrifuge is finished, the excess liquid was disposed of in the waste beaker. Next, 500 microliters of wash buffer was added to the blue tube which was then centrifuged for one minute to remove the excess liquid which was then discarded in the waste beaker. After applying the wash buffer for the second time, the blue tube was then centrifuged for two minutes to make sure all of the ethanol is out so the DNA isn’t inhibited. The blue column was then transferred to a clean, sterile tube and 50 microliters of elution buffer was added. It’s…

    • 1516 Words
    • 7 Pages
    Better Essays
  • Better Essays

    Bio 1 Lab: Electrophoresis and DNA fingerprinting Jani Lynette Hagen October 31,2014 U74644799 Electrophoresis is a technique which uses an electric field to separate molecules, allowing for identification and characterization of the molecules. It is commonly used to separate nucleic acids and protein molecules of various sizes. To prepare the gel for electrophoresis the amount of agrose needed must be calculated. For a 0.8 percent gel 0.8 grams of agrose is necessary per 100 ml of buffer. The DNA fingerprinting experiment only called for 50ml of buffer, therefore only 0.4 grams of argose was needed. Once the buffer and argose were combined, the solution was microwaved until the argose had completely dissolved. While waiting for the solution to cool, the gel box was assembled by putting the gel tray into it and placing the gel comb at the end of the tray. As soon as the argose solution was cool enough to handle, our TA added ethium bromibe to our solution. Ethium bromide is useful as a fluorescent tag (nucleic acid stain) for electrophoresis it binds to DNA and when exposed to UV light it glows bright orange. After the ethium bromide and the agrose gel were combined, the new mixture was poured into the gel tray and allowed to solidify. Once the gel became solid, it was carefully removed along with its tray from the gel box. Next, it was repositioned it so that the wells were on the negative side of the box. Since, DNA fragments are negative; this caused them to migrate away from the negative electrode. The electrophoresis device was then filled with 250ml of the 1X TBE buffer. The surface of the gel should be completely submerged. Finally, we removed the gel comb and added the sample. Thirty micro meters of each sample was placed in the wells according to the following order:…

    • 1085 Words
    • 4 Pages
    Better Essays
  • Powerful Essays

    Human Genetic Engineering

    • 1539 Words
    • 7 Pages

    This process has four steps. First, enzymes are used to cut DNA molecules into smaller fragments. Second, the fragments are inserted into a cloning device, such as plasmids. Third, the fragments that are wanted are identified, and then copied. Fourth the fragment is inserted back into the same organism or possibly into a different one.…

    • 1539 Words
    • 7 Pages
    Powerful Essays
  • Satisfactory Essays

    Genetics Lab Report

    • 417 Words
    • 2 Pages

    Introduction Genetics is the study of units of heredity. Genes determine almost everything about what makes humans humans and genes are passed from parent to offspring, because genes have a strong influence on all organisms. Genetics a very broad scientific discipline and the father of genetics is Gregor Mendel. Gregor Mendel studies how genes were inherited in pea plants by crossbreeding thousands of those and discovering their patterns and characteristics. In 20th century the technology has advanced and scientists were able to study the gene itself. They discovered that genes were made of DNA, each DNA carried structured called chromosomes and those chromosomes determined traits that are seen in the next generation. It was James Watson and…

    • 417 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Once the annealing process is complete, the primers are extended (at 30o C) by a DNA polymerase added to the reaction (Mullis et. al. 1986). At a certain temperature, the DNA polymerase will add the remaining nucleotides to the DNA strand. These strands of DNA are constantly getting smaller and more specific in sequence until the desired sequence is obtained. This process is repeated until an isolated, amplified sequence of DNA is obtained.…

    • 524 Words
    • 3 Pages
    Good Essays