Transformations Presented in E. Coli Using the pGlo Gene Introduction In biology, genetic transformations involve the transfer of a gene into an organism to give that organism a new gene to express (Blaber, 2004). Genetic transformations can be used for therapy, vaccinations, and in tissue renewal (Rivera,2014). In 1928, a man named Frederick Griffith discovered the term genetic transformations and their use (Griffiths,2000). To test these new genetic transformations a substance called pGlo is used to allow for replication and to see the results because of the bioluminescence. From Genetic Transformation, Dr. Michael Blaber wrote, “The pGLO plasmid contains an origin or replication, a selectable marker, and the gene for Green Fluorescent …show more content…
As a result of the pGlo gene being inserted into the nonpathogenic substance of E.Coli, this experiment is testing whether or not E.Coli will grow and be bioluminescent. The independent variable in this experiment would be the E.Coli because it is either going to reproduce or not reproduce. Also, the pGlo gene is an independent variable because as a result the E.Coli is either going to be glowing or not glowing. The dependent variable would be the number of bacterial growth with the 12-18 hour time …show more content…
One needs to be labeled +PGlo and the other container is labeled -Pglo. Next, in both test tubes using a dropping, 250 microliters of calcium chloride is needed (Making sure to use a new dropper after each test tube). Then place both containers into a styrofoam cup containing crushed ice a. Taking a sterile loop, scrap a thin layer of E.coli from the petri dish onto the loop (making sure the loop gets a clear film over it). Remove the +pGlo test tube and open the container. Place the loop with the nonpathogenic E.coli and twirl it around in the test tube. Next, remove the loop and close container, place the +pGlo container back into the cup full of ice. Next, remove the test tube labeled -pGlo and repeat the instructions listed above making sure to get a new sterile loop before continuing. Then place the -pGlo test tube container back onto the ice and examine the pGlo genes. Using the pGlo gene, put one loop full of the pGlo into the container labeled +pGlo (Make sure to use a sterile loop). Place back on the crushed ice and wait ten minutes. While waiting, label the four petri dishes B lactamase - pGlo, B lactamase/ ampicillin -pGlo, B lactamase / ampicillin +pGlo ,and B lactamase/arabinase/ ampicillin +pGlo. After labeling the petri dishes, remove -pGlo and +pglo test tube containers from the ice cup and place them on the heat rack (at 42℃). Only leave the test tubes on for 50 seconds. After
Last test, inoculation of phenylalanine agar is used to determine if phenylalanine deaminase oxidizes phenylalanine into phenylpyruvic acid and ammonia. Sixth test, is a Multiple Test Media used to determine the physiological characteristics of unknown #398. First test, Inoculation of Kligler 's Iron agar was used to determine the production of hydrogen sulfide from cysteine and fermentation of glucose and lactose. Last test, inoculation of litmus milk is used to determine the fermentation of lactose, casein, lactalbumin, and
First one is the independent variable which was Magnesium chloride (Mgcl2) that we would be changing. The dependent variable was the speed of the Paramecium and to see how Magnesium chloride will change it. We had two treatment levels they were our control group without Magnesium chloride and experimental group with Magnesium chloride. Our experiment was replicated twenty times. In our control group sample size, we added drop of Paramecium on 217 ml dryl’s solution.
Results Continued: The purpose of this experiment was to show the transformation of E. Coli with pGLO. We made four different plates each with different additives to compare them to one another, and be able to track the transformation. Initially we had predicted that only one of the four plates would glow. The plate with the plasmid (+pGLO)/LB/amp/ara was the one we said would grow and glow because it contained all the necessary tools to do so.
On the first negative control plate, there should have been no growth on the plate with agar and ampicillin and regular E. coli cells. On the negative control plate with just agar and E. coli cells there should have been growth but the colonies would not
Introduction: Transforming a gene or genetic information from one organism into another with the hopes that if done successfully the organism with the new DNA will be given new traits is a method known as genetic transformation (Rafter). Genetic transformation is used quite frequently in today’s world, form medicine to agriculture. In this lab we will be inserting a gene into an Escherichia coli bacteria with the help of a plasmid. Escherichia coli bacteria also known as E. coli, is a bacterium that is rod shaped and contains flagella to help it move.
In this lab, the goal was to transform bacteria with genes that included fluorescence as well as antibiotic resistance that were taken from a jellyfish. Transformation is transferring a gene from one organism to another. Certain precautions had to be made before doing this lab since every step had to be done very quickly to prevent too much contamination. The first step in starting the transformation is to add the transformation solution into the +pGLO and -pGLO test tubes. After this is done, you put both tubes in ice and then put bacteria in both tubes.
The data observed and recorded in this lab shows that the concentration of miracle gro’ does affect the growth rate and germination speed of black eyed peas. The data is shown through two graphs and two data tables. The control group in this experiment is the seeds with a 0% concentration of miracle gro’, therefore the seeds with just water. The experimental groups are different concentrations of miracle gro’ including a 10%, 15%, 20%, 25%, and 30% concentration. The variable in this experiment is the amount/concentration of miracle gro’.
This experiment was tested on two conditions: +pGLO and -pGLO. +pGLO has the plasmid and -pGLO does not have the plasmid. Along with those conditions, ampicillin is added in the agar plate to destroy the non-transformed cells because scientist want to select only the transformed bacterial cells and the experiment is efficient at ten percent. To resist the antibiotic, the bacteria needs Beta lactamase that provide the enzyme. This allows the bacterial to break down the antibiotic and grow and with the plasmid.
1. Take heavily grow organism with the help of loop and incoculate in nitrate broth. 2. Incubate at 370C for 24 to 48 hrs. 3.
1. Introduction of exogenous DNA into animal cell lines, plant protoplast, yeast protoplast and bacterial protoplast. 2. Electroporation can be used to increase efficiency of transformation or transfection of bacterial cells. 3.
The plasmid needs to be isolated from the bacterial cells and the technique used is called alkaline lysis. This technique plays around with the pH to extract plasmid DNA. The culture is grown in medium containing ampicillin to select E.coli that have ampicillin resistance gene as their selectable marker. The addition of detergent to the cells causes cell lysis. The detergent attaches to the cell membrane and capture the protein and lipids of the cell membrane causing the cell to rupture.
Do the same for the other test tubes. Let the test tubes not be disturbed for about 3- 4 mins. Then add the Amylase solution to the Starch solution and start the stopwatch (immediately). After every 1 min take one drop from the test tubes and place then in the test plate that were
Also, although this likely served no contribution in disheveling the results, using a stirrer of the same material to ensure the separate testing of each substance will be as uniform as
Thus bacteria can be partially diploid, for some genes. This allows one to test if the alleles are dominant or recessive . Gene transfer agent (GTA) particle is contain of double-stranded DNA in a small fragment that`s mean not the whole genome , so when transduction occur the cell will become temporarily diploid for a portion of the genome during gene transfer process . That happen before the additional DNA is merged back to the origin DNA . That can help bacteria to pick up the most effective gene that will help in the resistance of the harsh environmental condition and also to determine the dominant strain by natural selection .