1858 ⟶ Rudolf Virchow proposes cell theory: "Omnis cellula e cellula"

Rudolf Virchow proposed that cells can only arise from pre-e...

Year

1838

1839

1858

🌿 Schleiden Proposes All Plants are Composed of Cells

Matthias Schleiden proposed that all plants are composed of cells.⟶

Cell TheoryBotanySchleidenCell Biology19th CenturyBiologyCytology

Germany

🔬 Schwann Proposes All Animal Tissues are Composed of Cells; Cell Theory Expanded

Theodor Schwann proposed that all animal tissues are composed of cells. Schwann and Schleinden argued that cells are the elementary particles of life.⟶

Cell TheoryBiologySchwannCell Biology19th CenturyCytologyHistology

Germany

🔬 Rudolf Virchow proposes cell theory: "Omnis cellula e cellula"

Rudolf Virchow proposed that cells can only arise from pre-existing cells; "Omnis cellula e celulla," all cell from cells. The Cell Theory states that all organisms are composed of cells (Schleiden and Schwann), and cells can only come from other cells (Virchow).⟶

Cell TheoryOmnis cellula e cellulaRudolf VirchowBiologyCytology19th CenturyCellular Biology

Germany

🐒 Darwin and Wallace independently propose theory of evolution by natural selection

Charles R. Darwin and Alfred Wallace independently proposed a theory of biological evolution ("descent through modification") by means of natural selection. Only in later editions of his works did Darwin used the term "evolution."⟶

EvolutionNatural SelectionCharles DarwinAlfred Russel WallaceBiology19th CenturyDescent with modification

United Kingdom