Molecular Evolution and Information

Transcription

 

Transcription copies the information in DNA into RNA as shown in figure 3.7. Note that RNA is a single strand, whereas DNA is double stranded. Also note the RNA does not contain the chemical thymine. Another chemical called uracil replaces it. Thus, an A-U bond (adenine-uracil) is formed between the DNA and RNA strand (as opposed to adenine-thymine). The enzyme RNA polymerase directs the synthesis of RNA.

Figure 3.7: Transcription





                

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