TIMELINE
1869- Charles Darwin wrote " On the Origin of Species by Means of Natural Selection, or the Preservation of Favored Races in the Struggle for Life."
1865- Gregor Mendel and his pea plant discovery.
1879- Walter Flemmin describes the chromosome behavior during animal cell division
1900- Mendel's work is rediscovered.
1920- P.A. Levine determined the basic structure of nucleotides that make up DNA
1928- Frederick Griffith; Streptococcus pneumoniae; bateria that causes pneumonia
1944- Oswald Avery identified the molecule that transformed the R strain of bacteria into the S strain
1950- Erwin Chargaff analyzed the amount of adenine, guanine, thymine, and cytosine in DNA of various species; a portio was published.
1951- Rosalind Franklin joined the staff at King's College; she took the famous Photo 51 and collected data used by Watson and Crick
1952- Alfred Hershey and Martha Chase- published results of experiments that provided definitive evidence that DNA was the transforming factor
1953- Watson and Crick published a one-page letter in the journal Nature that suggested a structure for DNA and hypothesized a method of replication for the molecule deduced from the structure.
1865- Gregor Mendel and his pea plant discovery.
1879- Walter Flemmin describes the chromosome behavior during animal cell division
1900- Mendel's work is rediscovered.
1920- P.A. Levine determined the basic structure of nucleotides that make up DNA
1928- Frederick Griffith; Streptococcus pneumoniae; bateria that causes pneumonia
1944- Oswald Avery identified the molecule that transformed the R strain of bacteria into the S strain
1950- Erwin Chargaff analyzed the amount of adenine, guanine, thymine, and cytosine in DNA of various species; a portio was published.
1951- Rosalind Franklin joined the staff at King's College; she took the famous Photo 51 and collected data used by Watson and Crick
1952- Alfred Hershey and Martha Chase- published results of experiments that provided definitive evidence that DNA was the transforming factor
1953- Watson and Crick published a one-page letter in the journal Nature that suggested a structure for DNA and hypothesized a method of replication for the molecule deduced from the structure.
This is Photo 51 that Rosalind took.