MBG 2040 Chapter 11: Chapter 11 notes
Document Summary
Dna to protein involves 2 steps: transcription: the transfer of genetic information from dna to rna. One strand of dna is used as a template to produce complementary strand of rna (the gene transcript: translation: the transfer of information from rna to protein. The sequence of nucleotides in the rna transcript is converted to the sequence of amino acids in the polypeptide gene product. Takes place on ribosomes, composed of 3-5 rna molecules and proteins. Primary transcript: the product of transcription, the same as mrna in prokaryotes. Pre-mrna: in eukaryotes, the precursor to mrna; the primary transcript must undergo excision introns and medication of both ends before translation. Bind to rna making it double stranded, which blocks translation, control protein production. *note: only mrnas encode protein, the rest are structural. The process of gene expression: overview in eukaryotes. Similar to dna synthesis but the precursors are ribonucleoside triphosphates (rtps) rather than deoxynibonucleoside triphosphates.