EVANTH 101D Lecture Notes - Lecture 4: Modern Synthesis (20Th Century), Ronald Fisher, Silent Mutation

• School: Duke University
• Department: Evolutionary Anthropology
• Course: EVANTH 101D
• Professor: Multiple

Document Summary

C with g: pairs bonded by weak hydrogen bonds. Dna replication: hydrogen bonds are broken apart, unattached nucleotide bases are attracted to parent strand, 2 identical strands are created, another protein checks for errors, only about one error every billion or so replications. Dna and protein synthesis overview: protein synthesis occurs in two stages: Translation (mrna trna -> amino acid chain (polypeptide): protein structure, constitution, and sequence determines its function. The order of the amino acids and their attraction to other amino acids within the polypeptide allows the protein to fold and create its shape. Dna copied into a strand of messenger rna (mrna) Uracil (u) is used instead of thymine (t) A. 2. mrna leaves cell nucleus to the cytoplasm where translation occurs to synthesize proteins: translation. Each three nucleotide sequence (called a codon) specifies a particular amino acid (aa) B. 2. mrna and transfer rna (trna) come together in a ribosome to produce chain of aas.