The Sermon on the Mount Prep1) Describe the teaching of Jesus in the sermon on the mount about judgement and forgiveness? Write a compare and contrast essay on any two works of literatureRead more
So although Shakespeare's ideas weren't original Words: 1243 - Pages: 5 Romeo and Juliet - Juliet, Film-Play Comparison Essay Explore the ways in which Romeo and Juliet are presented in this scene andRead more
running buffer. How can a mutation that alters a recognition site be detected by gel electrophoresis? Two small restriction fragments of nearly the same base-pair size appear as a single band, even when the sample is run to the very end of the gel. The gel is helpful because it is like a freeze frame that allows the fingerprinting to be visualized. If a restriction enzyme digest resulted in DNA fragments of the following sizes: 4000, 2500, 2000, and 400 base pairs, sketch the resulting separation by electrophoresis. What is the source of restriction enzymes? They only cut at specific proteins, the recognition site. Allow this to run until the DNA is almost to the end of the gel, but do not let it run all the way out. The dye allows the DNA to be more distinct so that accurate measurements can be made in determining the distance traveled and the amount of bands. They occur naturally in prokaryotes and are used to cut up invading viral DNA that happens to get through the cell wall and plasma membrane of the bacteria.
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These endonucleases recognize specific DNA sequences in double-stranded DNA, which is usually a four to six base pair sequence of nucleotides. They are used in genetic engineering because it is considerably easier to manipulate them into taking up preferred genes than it is to change the DNA sequence of the whole cell. He starts by discussing the process of transformation. Describe the function of electricity and the agarose gel in electrophoresis. Conclusion: In conclusion, DNA fingerprinting, or electrophoresis is used to determine the size of the fragments that are cut by restriction enzymes. The person transferring had to have a steady hand and good eyes so that the gel wasnt poked and the DNA made it into the chamber without problems. How do they work?