Explain, using the pCR 2.1 vector, what white colonies and blue colonies mean?
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Q: diiferentiate between PCR and Sanger sequencing?
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Q: How does diagnostic method for detecting Covid-19 using RT-PCR work?
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Q10) Explain, using the pCR 2.1 vector, what white colonies and blue colonies mean?
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- Q11) Explain, using the pCR 2.1 vector, what we would see if we try to grow cells on a plate with ampicillin and Xgal in each of these scenarios:a) transformation not successful (meaning the plasmid did not go inside the bacteria)b) transformation was successful, but no insert in LacZ gene (plasmid went in the bacteria but there was no inserted DNA in the LacZ gene of the plasmid)c) transformation and the ligation reactions were successful (got the plasmid in, and the plasmid is carrying extra DNA in the LacZ region, yay)Q13) Explain the similarities and differences between column chromotography and gel electrophoresis?How does diagnostic method for detecting Covid-19 using RT-PCR work?
- a. Explain whether or not DNA polymerase from a mesophilic bacterium could be used successfully in a PCR reaction. b. If starting with a single double-stranded DNA molecule, how many copies of the DNA would be synthesized after 25 PCR cycles?"Hybridization of a single-stranded DNA molecule attached to a fluorophore with a preparation of metaphase chromosomes that have been partially denatured" is a description of which laboratory method?describe the blue-white colony selection method in the recombinant colony screening, and present a brief argument for its use in biotechnology labs.
- AGAROSE GEL ELECTROPHORESIS PRELAB ANSWER ALL QUESTIONS 1. Type of nucleotide is one of the factors that influence electrophoretic mobility. a) True b) False 2. Electrophoresis is used for DNA separation and not proteins. a) True b) False 3. DNA Polymerase is an enzyme to cut DNA into fragments for electrophoresis. a)True b)False 4. Electrophoresis apparatus consists of Gel buffer, chamber and DNA separator. a) True b) False 5. During electrophoresis, DNA fragments collect at the Cathode. a) True b) False10) With the disk test, what specifically are you looking for to know if a bacteria is susceptible for an antibiotic? 11) What exactly does bacitracin do to bacteria to cause them to die or stop dividing?a) Which step of RT-PCR reactions does the figure shown below represents? b) Describe all enzyme(s) and name the molecule(s) that take part or are products of this step? Enzymes: Molecule 1: Molecule 2: Molecule 3:
- 1.) What characteristics of VNTR and STR make them useful for DNA fingerprinting? 2.) How does PCR minimize the problems associated with degraded DNA? 3.) What factors can cause DNA to become degraded? 4.) If Ethidium bromide was not added to a gel, what would happen? 5.) How can you tell if an individual is heterozygous for the D1S80 marker? 6.) If a negative control produces a band, what does this indicate? 7.) In an experiment, a student’s sample amplified for D1S80 produced 3 bands. It was the only DNA sample run on the gel. The student knows that there was no problem with the Thermocycler or primers because the other students in the class had the expected results of only one or two bands. What is the most likely explanation for these results?Choose two genes from Figure 4.6 and draw a graph to represent the change in transcription over time.Match the PCR sample with the predicted result on the agarose gel. 1) Sample from individual homozygous for their PV92 locus with the Alu insert. Five bands of 100, 200 500, 700 and 1000bp Single band of 300 bp Two bands one of 300 bp and one of 641bp Tow bands one of 641 bp and one of 941 bp No Bends Single band of 941 bp Single band of 641bp 2) Sample from individual homozygous for their PV92 locus without the Alu insert. Five bands of 100, 200 500, 700 and 1000bp Single band of 300 bp Two bands one of 300 bp and one of 641bp Tow bands one of 641 bp and one of 941 bp No Bends Single band of 941 bp Single band of 641bp 3) Sample from individual heterozygous for their PV92 locus having the Alu insert. Five bands of 100, 200 500, 700 and 1000bp Single band of 300 bp Two bands one of 300 bp and one of 641bp Tow bands one of 641 bp and one of 941 bp No Bends Single band of 941 bp Single band of 641bp 4) Negative control sample. Five bands of 100, 200 500, 700 and 1000bp…