BIOL 102 Chapter 15: Chapter 15- How Genes Work
Document Summary
Gene expression: the process of converting the information in dna into functioning molecules with the cell. Beadle and tatum"s research: inspired by the idea of discovering what genes do by making them defective. Experiment of beadle and tatum that lead to the hypothesis: choose neurospora as experimental organism b/c. One-gene, one-enzyme hypothesis: proposed that each gene contains the information needed to make an enzyme. Follow up research concluded what genes do: they contain the instructions for making protein that in turn perform a function in a cell. Since proteins are made up of different polypeptides (each of which is a product of a gene), the one-gene one-enzyme hypothesis is accurately known as one-gene, one-polypeptide hypothesis. Section 15. 2: the central dogma of molecular biology. Crick proposed that sequence of bases in dna might act as a code, and that dna was only an information-storage molecule. Instead it, the link b/t dna as info repository and proteins as cellular machines is indirect.
