Purging and cleaning To provide a more appealingproduct for live markets, a smallnumber of producers have adopt-ed the practice of purging craw-fish before selling them. Thisprocess cleans the exoskeleton ofmud and debris and eliminates orreduces digesta in the intestine(Fig. 10), which consumers mayfind unappealing.
10 hilariously insightful foreign words. DNA electrophoresis is a method used to sort DNA molecules by length. Pieces of DNA are suspended in a tray of gel and subjected to an electric field, which causes them to migrate toward one end of the tray. The DNA separates out into bands, with the distance from the electrode corresponding to length of the strand.
You may be referring to the DNA ladder used in gel electrophoresis. The ladder is a collection of DNA fragments of known size (e.g. 100, 500, 1000, 2000, 5000, 10000 base pairs) so that if it is loaded beside the samples, it can offer a 'ruler' that can be used to determine the size of the fragments in the samples.el electrophoresis separates DNA fragment on the basis of their size. In DNA fingerprinting or DNA typing given sample is cut up with restriction enzymes and run through elec â¦ trophoresis and results are analyzed to check for DNA polymorphism between the given sample and a sample form suspect.