Transcription: First stage of gene expression, Involves creating pre-mRNA by converting DNA into RNA , Occurs in nucleus , RNA polymerase is the enzyme that initates this process , DNA unwinds/ unzips, RNA Processing: Also referred to as post-transcriptional modification, Involes modifying pre-mRNA into mRNA, Occurs in the nucleus, Addition of a 5' methyl G cap , Addition of a 3' PolyA tail , Removal of introns , Splicing of exons, Translation: Occurs at ribosomes , Requires tRNA to carry amino acids to build polypeptide chain , tRNA molecule has a complementary anticodon sequence to mRNA at the ribosome, Condensation reation , Peptide bonds form between amino acids in polypeptide chain , Polypeptide chain is formed , Ribosome binds to and reads mRNA ,

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