Restriction fragment length polymorphism

Описание: This lecture explains about the restriction fragment length polymorphism or RFLP. http://shomusbiology.com/
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This video tutorial describes the use of restriction fragment length polymorphism process in determining the type of organisms.
In molecular biology, restriction fragment length polymorphism, or RFLP (commonly pronounced "rif-lip"), is a technique that exploits variations in homologous DNA sequences. It refers to a difference between samples of homologous DNA molecules that come from differing locations of restriction enzyme sites, and to a related laboratory technique by which these segments can be illustrated. In RFLP analysis, the DNA sample is broken into pieces (digested) by restriction enzymes and the resulting restriction fragments are separated according to their lengths by gel electrophoresis. Although now largely obsolete due to the rise of inexpensive DNA sequencing technologies, RFLP analysis was the first DNA profiling technique inexpensive enough to see widespread application. In addition to genetic fingerprinting, RFLP was an important tool in genome mapping, localization of genes for genetic disorders, determination of risk for disease, and paternity testing.
Analysis of RFLP variation in genomes was a vital tool in genome mapping and genetic disease analysis. If researchers were trying to initially determine the chromosomal location of a particular disease gene, they would analyze the DNA of members of a family afflicted by the disease, and look for RFLP alleles that show a similar pattern of inheritance as that of the disease (see Genetic linkage). Once a disease gene was localized, RFLP analysis of other families could reveal who was at risk for the disease, or who was likely to be a carrier of the mutant genes.

RFLP analysis was also the basis for early methods of Genetic fingerprinting, useful in the identification of samples retrieved from crime scenes, in the determination of paternity, and in the characterization of genetic diversity or breeding patterns in animal populations. Source of the article published in description is Wikipedia. I am sharing their material. © by original content developers of Wikipedia.
Link- http://en.wikipedia.org/wiki/Main_Page PPT source: The biology of life by Neil A. Campbell, Jane B. Reece, Lawrence G. Mitchell, Copyright Pearson/Benjamin Cummings
Link- http://www.course-notes.org/biology/s...