Lecture 22BIOL 2013 1st Edition Lecture 22 Outline of Last LectureI. ReviewII. We didn’t have class on Wednesday.Outline of Current LectureI. GeneticsII. What does DNA directly participate in?III. Types of RNACurrent LectureI. Genetics A. DNA codes for mRNA and mRNA codes for protein(enzymes)which then catalyze a reactions which results in a product 1. brown eyes= the reactions results in a brown pigment B. the backbone of DNA is made of deoxyribose C. nucleic acids then match together 1. A-T and C-G 2. in RNA uracil replaces thymine and matched with adenine D. founders 1. Watson and Crick discovered DNA in 1953 2. they got a Nobel Prize but it was different because noexperiment was preformed E. bacteria have circular chromosomes F. Replication 1. semiconservative replication: it will unwind then newDNA(daughter strand) will be made to pair with the unwoundstrand (parent strand) 2. the 2 strands are antiparallel(one goes up and the other goesdown) G. DNA Transcription 1. rewriting of DNA message into RNA 2. RNA polymerase(transcriptase): carries out transcription(synthesizing RNA) a) bind b) reads the template(strand of DNA that is read) c) detaches 3. uses message in the DNA to make RNA H. Translation 1. tRNA bring the amino to a proper codon a) a group of 3 bases b) part of the tRNA had the complimentary to thecodon(anticodon) II. What does DNA directly participate in? A. replication B. transcription III. Types of RNA A. rRNA: ribosomal RNA 1. used for protein synthesis B. tRNA: transfer RNA C. mRNA: messenger RNA 1. carriers a message to create a
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