This image illustrates the chemical structures of the five main nucleobases found in DNA and RNA. The pyrimidines, thymine (DNA), uracil (RNA), and cytosine are shown on top while the purines, adenine ...
Comparison of a single-stranded RNA and a double-stranded DNA with their corresponding nucleobases (Image: Wikimedia Commons, CC SA 3.0) The central dogma of molecular biology describes the flow of ...
In yeast, mice, and humans, the first step in a gene's expression, transcription, proceeds as DNA molecular "letters" ...
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