1. Cul es el material esencial dela informacin gentica?

2. Gregorio Mendel (1866), establece que lainformacin gentica se transmite de unageneracin a otra 3. Friederich Miescher en 1869, aisl losncleos celulares una sustancia que llamNUCLENA 4. Rudolf Virchow en 1855, indica que lasclulas nuevas pueden originarse a partir declulas preexistentes. Como corolario, August Wissman en 1880seala que todas las clulas vivas de laactualidad pueden tener un origen comn apartir de las clulas de la antigedad 5. Principio transformante, experimento deGriffth, 1928 6. The AveryMacLeodMcCarty experiment was an experimental demonstration,reported in 1944 by Oswald Avery, Colin MacLeod, and Maclyn McCarty, thatDNA is the substance that causes bacterial transformation. 7. Figure 8-3. The Hershey-Chase experiment, which demonstrated that the genetic material ofphage is DNA, not protein. The experiment uses two sets of T2 bacteriophages. In one set,the protein coat is labeled with radioactive sulfur (35S), not found in DNA. In the other set,the DNA is labeled with radioactive phosphorus (32P), not found in protein. Only the 32P isinjected into the E. coli, indicating that DNA is the agent necessary for the production ofnew phages. (1952). 8. Experimentosde Fraenkel-Conrat, 1957 9. REPLICACIN DNA DNATRANSCRIPCIN RNATRADUCCIN PROTENAS