...24 November, 1859 Charles Darwin published "On the Origin of Species", and our view and understanding of Biology was changed. The full title for the first edition (which sold out), was "On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life"
It is amazing to read the first edition now, as one soon realises what a genius Darwin was, and how far ahead of his time he was. Darwin used information that he had gathered on the HMS Beagle, during its long voyage of exploration in the 1830's. One has to remember that he managed to put together all the facts without a knowledge of genes, or even a fossil record. All that came later, which reinforced his work.