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322 BCE
Aristotle
Was the first biologist in the western tradition and -
Andrea Cesalpino
Andrea was an Italian physician, philosopher and botanist. In his works he classified plants according to their fruits and seeds, rather than alphabetically -
light microscope
Zacharias Jansen and his father Hans were responsible for making the first compound microscope in the late 16th century -
Carl Linnaeus
he published the first edition of his classification of living things and is famously known for Binomial nomenclature, Scientific classification and Taxonomy. The first 2 kingdoms in the classification system: Plantae and Animalia. -
John Ray
Ray has published important works on botany, zoology, and natural theology. His classification of plants was an important step towards modern taxonomy. -
Amino Acid
Louis-Nicolas Vauquelin and Pierre Jean Robiquet isolated a compound in asparagus and then the first amino acid was discovered. -
DNA
James Watson and Francis Crick discovered the structure of DNA and it was found to be a double helix. -
Ernst Haeckel
Ernst is a biologist, naturalist, philosopher, physician, professor, marine biologist, and artist who discovered, described and named thousands of new species. And the 3 kingdoms in the classification system. -
Electron Microscope
The first electron microscope (prototype) was built in 1931 by German engineers Ernst Ruska and Max Knoll -
Robert Whittaker
Robert changed to classification system from the three original kingdoms to the 5 listed: Animalia, Plantae, Fungi, Protista and Monera -
Carl Woese
updated the classification system to the most recent one that is still used today. The 6 kingdoms are: Bacteria, Archaea, Protista, Animalia, Plantae and Fungi. He also created the 3 Domains: Bacteria, Archaea and Eukaryota.
