GRE Subject Test: Biochemistry, Cell, and Molecular Biology › Help with Genetic Cloning, Splicing, and Sequencing
What technology allows for the assembly of a large DNA sequence from many shorter template sequences by oligonucleotide primer driven polymerase amplification?
When making a fusion protein with an N-termial biochemical tag, where should start and stop codons be located within this sequence?
What is directional cloning?
Two students receive 1 microliter of plasmid DNA that expressed beta-lactamase under a constitutive promoter, and green fluorescent protein (eGFP) under an arabinose inducible promoter.
The students decide to heat shock transform the entire volume of plasmid DNA into chemically competent bacterial cells to ensure that they have enough replicated plasmid for future experiments. The students also transform the same volume of sterile water as a control. They plate their transformations on the following plates:
1. Nutrient agar
2. Nutrient agar plus ampicillin
3. Nutrient agar plus ampicillin and arabinose
The next day, the students observe a lawn of bacteria on each plate for bacterica transformed with the plasmid, with only 1/10 of the bacteria glowing green on plate 3. Additionally, they observe a lawn of bacteria on each plate for the control condition.
Which is most likely the cause of their results?
When performing heat shock transformation of a DNA plasmid into Escherichia coli, what purpose does the heat shock serve?
Lambda cloning remains one of the most efficient cloning methods available. What steps are required in the reaction with the lambda phage to clone and copy your subject DNA?
When performing a polymerase chain reaction, what is the purpose of the annealing temperature?
During a bacterial transformation of a plasmid, what is the purpose of incubating the bacteria with calcium chloride in the experiment?
A researcher wants to clone a bacterial gene into a mammalian expression vector for his project. Which of the following most accurately represents the chronological steps the researcher should take in order to successfully obtain the construct?
What important advance in Sanger chain termination based DNA sequencing technique allowed for vast improvements in sequence data output?