Chapter 16 Transcription and Translation

Chapter 16 Transcription and Translation -...

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DNA base sequence to protein SUMMARY *Transcription *Initiation *Elongation and termination *Translation *Initiation *Elongation and termination *Mutations Figure UN15-5 RNA-THE PROTEIN ASSEMBLY LINE AND WORKERS *RNA - 3 types *rRNA      = ribosomal RNA *tRNA      = transfer RNA *mRNA      = messenger RNA The Code *A specific order of nucleotides or bases on the DNA. *Occurs in blocks of 3 bases = codons  that specify which amino acid goes where in a  protein. *1 codon = one amino acid *The code is “universal”, i.e. the codons specify the same amino acids in all organisms,  pretty much. Transcription *Production of a mRNA “copy” of the DNA sequence of a certain gene. *Enzyme = RNA polymerase ; 1 in prokaryotes, 3 in eukaryotes. *The base sequence on 1 DNA strand is used as a template = “template  strand ”.  The  other strand is the “non-template  strand ”, fig 16.1. 1
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This note was uploaded on 09/08/2011 for the course BIOL 1403 taught by Professor Dini during the Fall '09 term at Texas Tech.

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Chapter 16 Transcription and Translation -...

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