-
Darwin proposed the theory of evolution by the process of natural selection.
-
In his paper he shows the action of "invisible" factors in providing for visible traits in predictable ways. The "invisible" trait is genes
-
Miescher was the first person to identify what he called the "neclein" which contains DNA.
-
The eugenics movement represents a lack of understanding regarding the discovery of it. Eugenics was first used around 1883 to describe the science of heredity and breeding.
-
Researchers rediscover Mendel's pea plant research.
-
Garrod concludes that alkaptonuria was a recessive disease, associating it with Mendel's theories. This discovery helped researchers to develop an understanding of the molecular basis of inheritance.
-
Oswald showed that DNA can transform the properties of cells. This helped to clarify the chemical nature of genes.
-
Chargaff discovers that in any double stranded DNA the number of guanine is equal to the number of cytosine and the number of the adenine is equal to the number of thymine. This is called Chargaff's rule.
-
She produced a high resolution picture of DNA fibers. Using the picture she found out the dimensions of a strand and deduced that phosphates were on the outside of what was a helical structure.
-
Watson and Crick discover that DNA is a double helix. They used X-ray data to build a model. Despite the fact that they used the photograph that Franklin had made she did not get honored and could not share the noble prize.