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Light microscope
Their first microscopes were more of a novelty than a scientific tool since maximum magnification was only around 9x and the images were somewhat blurry. -
First hierarchical system
In the 18th century, Carl Linnaeus developed the first hierarchical system. This included naming the species and identifying its closest relatves -
Introducing bacteria to the structure
With the introduction of the light microscope, scientist were able to go further into cells to categorise them. Earnst Haeckel was the scientist that went further in depth. Haeckel at this time renamed Vegtabilia to Plantae. -
DNA Shuffling
The late 20th century discovery of restriction endonucleases, enzymes that cut DNA molecules at sites comprising specific short nucleotide sequences, and the subsequent emergence of recombinant DNA technology provided scientists with high-precision tools to insert (or remove) single genes into the genomes of a variety of viruses and organisms, leading, for example, to the introduction of production-enhancing traits into crop plants. -
2 Domains
Édouard Chatton introduced 2 domains Prokaryota, Eukaryota -
4 kingdoms
4 kingdoms introduced by Herbert Copeland:
Monera
Protoctista
Plantae
Protoctista
Animalia -
development of electron microscope
Aton Van Leeuwenhoek uses Electron microscope discovers procaryotes -
Thermoluminescence
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5 Kingdom system
Whittaker proposed a 'five Kingdom' system -
Dna sequencing
comparing the variation in the order of basis gene DNA. -
6 Kingdom structure
Carl woese introduces 6 Kingdoms
broke monera into eubacteria and archaebacteria -
Bioprospecting
These materials include genetic blueprints (DNA and RNA sequences), proteins and complex biological compounds, and intact organisms themselves. -
3 Domains
Carl Woese introduced 3 domains
Bacreria
Archea
eukarya -
Further Developments in the classification system
it involves systematic arrangements of all life forms on earth. Following and improving the classification systems introduced by Carl Linnaeus, Ernst Haeckel, Robert Whittaker, and Carl Woese, Cavalier-Smith's classification attempts to incorporate the latest developments in taxonomy. His classification has been a major foundation in modern taxonomy, particularly with revisions and reorganisation of kingdoms and phyla.
