Here are the details of transcription

Here are the details of transcription -...

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Here are the details of transcription, RNA processing, and protein synthesis (also see Figures 6 and  7):  During transcription, the RNA polymerase attaches to promoter regions on the DNA and  beings to unzip the DNA into two strands. (See Step 1 in Figure 6.)  As the RNA polymerase unzips the DNA, it assembles new nucleotides using one strand of  the DNA as a template. In contrast to the process of DNA replication, the new nucleotides are  RNA nucleotides, and only one DNA strand is transcribed. (See Step 2 in Figure 6.)  Transcription continues until the RNA polymerase reaches a special sequence of nucleotides  that serves as a termination point. The RNA polymerase and the newly created RNA molecule  are released. This newly created RNA molecule may be mRNA, tRNA, or rRNA, depending on  which DNA segment is transcribed. (See Step 3 in Figure 6.) 
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