Research for DNA Day Project: 1859 – Charles Darwin/Alfred Wallace – (discovery) determined that members of a population who are better adapted to the environment survive and pass on their traits. Charles Darwin published The Origin of Species. (impact) His discovery brought controversy and brought about a new scientific thought. (country) The discovered evolution while working in England. (awards) He won the Royal Medal, the Wollaston Medal, and the Copley Medal. "Charles Darwin." BBC News. BBC, n.d. Web. 20 Mar. 2013. <http://www.bbc.co.uk/history/historic_figures/darwin_charles.shtml>. 1866 – Gregor Mendel – (discovery) published the results of his investigations of the inheritance in pea plants and he created the science of genetics. (impact) His discovery allowed future scientists to conduct research on heredity. (country) He was in Austria-Hungary when he discovered genetics. (awards) He did not win any awards. “Online Education Kit: 1865: Mendel's Peas." Online Education Kit: 1865: Mendel's Peas. N.p., n.d. Web. 20 Mar. 2013. <http://www.genome.gov/25520230>. 1879 – Walther Flemming – (discovery) described chromosome behavior during animal cell division and was one of the first scientists to observe mitosis. He also developed a way to stain chromosomes. (impact) His ideas were combined with Mendel’s twenty years later to provide future scientists with their knowledge. (country) He was in Germany when he observed cell division. (awards) His name was awarded with a medal by the German Society for Cell Biology. "Walther Flemming (German Biologist)." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 20 Mar. 2013. <http://www.britannica.com/EBchecked/topic/210024/Walther-Flemming>. 1911 – Thomas Hunt Morgan – (discovery) used fruit flies as a model organism to show that genes are units of heredity and that chromosome carry genes. (impacts) His discoveries made it possible to conduct a series of questions about the function and structure of genes. (country) He was in America at Columbia University when the discovery was made. (awards) He won the Nobel Prize in 1933 in Physiology. "Online Education Kit: 1911: Fruit Flies Illuminate the Chromosome Theory." Online Education Kit: 1911: Fruit Flies Illuminate the Chromosome Theory. N.p., n.d. Web. 20 Mar. 2013 1941 – George Beadle and Edward Tatum – they showed that genes act by chemical events, therefore coming up with the “one gene, one enzyme” hypothesis. Proposed that each gene directs the formation of one enzyme. They shared the Nobel Prize in Physiology and Medicine. They were working in America at the time of the discovery. "GNN - Genetics and Genomics Timeline." GNN - Genetics and Genomics Timeline. N.p., n.d. Web. 21 Mar. 2013. <http://www.genomenewsnetwork.org/resources/timeline/1941_Beadle_Tatum.php>. Tatum 1943 – William Astbury – obtained the first X-ray diffraction pattern of DNA. He observed that nucleotide bases were stacked on top of each other. He was given many awards and honorary degrees. His discovery was made in Britain. "Online Education Kit: 1943: X-ray Diffraction of DNA." Online Education Kit: 1943: X-ray Diffraction of DNA. N.p., n.d. Web. 24 Mar. 2013. <http://www.genome.gov/25520249>. 1953 – Francis Crick and James Watson – they described the double helix structure of DNA. They built a DNA model that showed the double helix shape, the sugar and phosphate groups, and the nucleotide bases (adenine, cytosine, guanine, and thymine) all paired specifically. They received the Nobel Prize for Physiology or Medicine. They were working at Cambridge University in the United Kingdom when the discovery was made. "Online Education Kit: 1953: DNA Double Helix." Online Education Kit: 1953: DNA Double Helix. N.p., n.d. Web. 24 Mar. 2013. <http://www.genome.gov/25520255>. 1959 – Jerome Lejeune – discovered that Down syndrome was caused by trisomy 21 (an extra copy of chromosome 21). The extra copies affect development of the brain and body. He was in France when he made this discovery. He received numerous awards and was elected as a member of several academies. "Online Education Kit: 1959: Chromosome Abnormalities Identified." Online Education Kit: 1959: Chromosome Abnormalities Identified. N.p., n.d. Web. 24 Mar. 2013. <http://www.genome.gov/25520259>. 1966 – Marshall Nirenberg, Har Khorana, and Severo Ochoa – cracked the genetic code and showed how nucleic acids determine the order of the 20 kinds of amino acids in proteins. In time, they deciphered the first codon. Khorana and Nirenberg won the Nobel Prize in Physiology or Medicine. This discovery was in America. "Online Education Kit: 1966: Genetic Code Cracked." Online Education Kit: 1966: Genetic Code Cracked. N.p., n.d. Web. 24 Mar. 2013. <http://www.genome.gov/25520300>. 1972 – Paul Berg – was one of the first to produce a recombinant DNA molecule. He also urged the National Institutes of Health to allow research of recombinant DNA technology. This was done at Stanford University in the United States of America. Paul Berg won the Nobel Prize in Chemistry. "Online Education Kit: 1972: First Recombinant DNA." Online Education Kit: 1972: First Recombinant DNA. N.p., n.d. Web. 24 Mar. 2013. <http://www.genome.gov/25520302>.