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Agarose gel electrophoresis is the method to analyze the size of the DNA (or RNA) fragments. In the presence of an electric field, bigger fragments of DNA move through a gel slower than the smaller ones, producing different migrating "bands". Generally, these are visualized by soaking the gel in a dye (ethidium bromide) which makes the DNA fluoresce under UV light. This is the gel of choice for the DNA or RNA in the range of thousands of bases in length, or up to 1 megabase if you are using pulsed field gel electrophoresis.
Define Steps in the Development of Exchange List? As mentioned above, when we group together similar food items so that each supplies a constant amount of a particular nutrient
Valvular Heart Diseases Normal heart valves function to maintain a uni-directional flow of blood through cardiac chambers. Two basic problems that compromise the normal functi
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Q. Mistakes may happen during each copying process. The same is true for the DNA replication. Are there correction systems in cells that try to mend those mistakes? Under which sit
List three human activities which could cause the loss of a species. Human activities which threaten species with extinction are: (i) hunting of individual species, (ii) over-
Why do preserved foods not spoil? Plant and animal cells must stay in an isotonic, or neutral, solution to survive. When salt or sugar is added, more of the cells wither and di
Name an artificial fertiliser or fertilisers which farmers can use to increase the supply of nitrate, phosphate and potassium to their crops. NPK compound fertiliser havin
Describe three ways that RNA differs from DNA. RNA is single stranded; DNA is double stranded all of the codons from the deletion point to the end of the transcript would be s
Phylum Bryophyta The Bryophytes include the mosses and their close relatives. They are widely diverse and grow in a variety of place. 1) Life cycle shows alternation of gene
Define Advantages of using Bacteria as a source of protein? Advantages of using Bacteria as a source of protein are as follow: 1. High yield of protein (60-80%) 2.
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