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The use of restriction enzymes to characterize DNA has been popular since the 1970s. Today, this “old school” technique is still one of the easiest and fastest ways to assess DNA sequences. Like most lab reagents, restriction enzymes can be fickle and you should bear a few things in mind when using them. Generally, sticky-ended enzymes have greater…
We all know that genes encode proteins that make up a living cell. However, the level and coordination of gene expression is really the key to the success of a living cell. One way eukaryotic cells (that’s us!) control protein expression is through addition of a methyl or hydroxymethyl group on the cytosine nucleotide. This…
Epigenetics is the study of heritable changes in the phenotype of a cell or an organism that are not encoded by the genome (hence epi which means ‘above’ in Greek, and genetikos which means ‘origin’). In this article, we’ll discuss DNA methylation, a common epigenetic modification: what it is, how to detect it, and how…
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