BIO SCI 93 Lecture Notes - Lecture 15: Uracil, Srb, Archibald Garrod
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BIO SCI 93 Full Course Notes
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No ambiguity though: each codon produces its amino acids, and nothing else. Dna rna protein (genotype to phenotype) Primary transcript: the initial rna transcript from any gene. Redundancy: different codons that produce the same amino acids. Transcription factors- mediate the binding of rna polymerase and can only add 5" to 3". During pre mrna to rna, the rna gets modified on both ends and each end is fixed. 5" end modified nucleotide cap, 3" poly a tail. They seem to facilitate the export of mrna to cytoplasm, protect mrna from hydrolytic enzymes, and helps attach ribosome to 5" end. Mrna is the coding used to make proteins. trna brings the anticodon to the mrna"s codons. Archibald garrod- was the first to suggest that genes dictate phenotypes through enzymes that catalyze specific chemical reaction in the cell. Beadle and edward tatum-worked with bread mold.