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Charles Darwin
Charles Darwin discovers natural selection -
Gregor Mendel
Gegor Mendel creates the punnet square and adds to the knowledge of modern genetics. -
Chromosomes Carry Genes
Thomas Hunt Morgan and his students study fruit fly chromosomes. They find that chromosomes carry genes. -
DNA transforms Cells
Oswald Avery, Colin MacLeod, and Maclyn McCarty show that DNA transforms the properties of cells, not proteins. This clarified the chemical nature of genes. -
Genes are made of DNA
Test show that only the DNA of a virus needs to enter a bacterium to infect it, implying that genes are made of DNA. -
DNA double helix
Francis Crick and James Watson create a model of DNA. Showing that it is a double helix structure. -
46 Human Chromosomes
Joe Hin Tijo defines 46 as the exact number of chromosomes in human cells. -
First Transgenic Mice and Fruit Flies
Scientists create the first genetically modified living mice and fruit flies. -
Positional Cloning
Scientists find a method to posistionally clone a disease gene. -
Completion of the Human Genome Sequencing
The finished human genome sequence will be at least 99.99% accurate