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Compared to other tests, southern blot is a complex technique that has multiple steps and these steps require equipment and reagents that are expensive. [10] High quality and large amounts of DNA are needed. [10] Southern blotting is a time consuming method and can only estimate the size of the DNA since it is a semi-quantitative method. [10]
A Southern blot is a method routinely used in molecular biology for detection of a specific DNA sequence in DNA samples. Southern blotting combines transfer of electrophoresis-separated DNA fragments to a filter membrane and subsequent fragment detection by probe hybridization. [1]
Sir Edwin Mellor Southern FRS FRSE (born 7 June 1938) [4] is an English Lasker Award-winning molecular biologist, Emeritus Professor of Biochemistry at the University of Oxford and a fellow of Trinity College, Oxford. He is most widely known for the invention of the Southern blot, published in 1975 [5] and now a common laboratory procedure. [6 ...
So far this process is very similar to the short-range mapping technique. After Pulsed-field gel electrophoresis, a southern blotting technique is performed and detections of specific fragments using molecular probes occur to complete the production of large-scale restriction maps. The map is created via an elaborate and deductive process of ...
The PCR technique itself has been adapted to detect polymorphisms, as allele-specific PCR. However, the simplicity and versatility of the combined PCR/ASO method has led to its continued use, including with non-radioactive labels, and in a "reverse dot blot" format where the ASO probes are bound to the membrane and the amplified sample DNA is ...
This process is termed Southern blotting. For fluorescent dyes, after electrophoresis the gel is illuminated with an ultraviolet lamp (usually by placing it on a light box, while using protective gear to limit exposure to ultraviolet radiation). The illuminator apparatus mostly also contains imaging apparatus that takes an image of the gel ...
DNA gel electrophoresis is usually performed for analytical purposes, often after amplification of DNA via polymerase chain reaction (PCR), but may be used as a preparative technique prior to use of other methods such as mass spectrometry, RFLP, PCR, cloning, DNA sequencing, or southern blotting for further characterization.
Southern blot: Used to detect specific DNA sequence in DNA samples: Molecular biology: Test cross: Used to determine whether an individual is homozygous or heterozygous dominant: Genetics: Voltage clamp: Used to measure the ion currents through the membranes of excitable cells, such as neurons, while holding the membrane voltage at a set level ...