The River Divides into Thousands of BranchesMain MenuPreface and AcknowledgmentsPart I: That the genetic material is DNA is established and becomes widely acceptedPart II: The structure of DNA reveals how the genetic material is duplicatedPart III: DNA is shown to be a linear code for proteinsPart IV: Genes are Shown to be RegulatedPart V: Messenger RNA is Discovered and the Genetic Code is CrackedPart VI: Three Technologies Revolutionized Molecular BiologyEpilogueAppendix: A Nobel Incubator
Ptashne Repressor Binding Graph
12025-01-22T09:20:33-05:00George Shaohua Qiao78e5371050dd5c0e21d36bad469c70d8d4be54642251This graph measures lambda repressor binding to DNA by measuring the radioactivity of different samples obtained from sedimentation of mixtures of radioactive repressor with lambda DNA and lambda 434 DNA. The graph with solid circles displays a peak at the relatively heavy tube 4, indicating the binding of radioactive repressor to lambda DNA. However, the graph with open circles, corresponding to lambda 434, shows no such peak, indicating that lambda repressor binds specifically to lambda and not lambda 434.plain2025-01-22T09:20:33-05:00George Shaohua Qiao78e5371050dd5c0e21d36bad469c70d8d4be5464