21. Alfred Day Hershey, Pioneer In DNA Research alfred Day hershey, Ph.D., a nobel laureate who spent the first 16 years of hiscareer at the School of Medicine, died Thursday, May 22, 1997, at his home in http://record.wustl.edu/archive/1997/06-12-97/7938.html

Alfred Day Hershey, pioneer in DNA research Alfred Day Hershey, Ph.D., a Nobel laureate who spent the first 16 years of his career at the School of Medicine, died Thursday, May 22, 1997, at his home in Syosset, N.Y. He was 88. Hershey joined the Washington University Department of Bacteriology and Immunology in 1934 after receiving a doctorate in chemistry from Michigan State College. Inspired by department head Jacques J. Bronfenbrenner, he began to work with bacteriophages viruses that infect bacterial cells. At a time when few people were studying the chemical or genetic properties of viruses, Hershey developed ways to recognize and analyze viral genetic traits, believing that studies with such a simple form of life might reveal basic hereditary principles. In 1946, he produced the first convincing evidence that two strains of a virus can exchange genetic material if they infect the same bacterial cell. Hershey moved to the Genetics Research Unit of the Carnegie Institution at Cold Spring Harbor Laboratory in New York in 1950. Two years later, he and geneticist Martha Chase discovered how bacterial viruses infect cells and provided a critical piece of evidence for the view that DNA, not protein, was the genetic material. They labeled the protein coat of one batch of phages with radioactive sulfur and the DNA core of another batch with radioactive phosphorus. Tracking the labels during infection, they observed that most of the protein label stayed outside the bacterial cell and could be removed with a blender, whereas the DNA label entered the bacterium and reappeared in progeny phage. This experiment proved that genetic information is in DNA, not protein, as some researchers had proposed.

22. Premios Nobel De Fisiología Y Medicina Translate this page AÑO, PREMIOS nobel OTORGADOS EN FISIOLOGÍA Y MEDICINA. 1969, Delbrück,Max (EEUU) hershey, alfred D. (EEUU) Luria, Salvador E. (EEUU). http://fcmjtrigo.sld.cu/nobel.htm

Premios Nobel de Fisiología y Medicina Premio Nobel : premios concedidos cada año a personas, entidades u organismos por sus aportaciones extraordinarias realizadas durante el año anterior en los campos de la Física, Química, Fisiología y Medicina, Literatura, Paz y Economía. Otorgados por primera vez el 10 de diciembre de 1901, los premios están financiados por los intereses devengados de un fondo en fideicomiso contemplado en el testamento del químico, inventor y filántropo sueco Alfred Bernhard Nobel. Además de una retribución en metálico, el ganador del Premio Nobel recibe también una medalla de oro y un diploma con su nombre y el campo en que ha logrado tal distinción. Los jueces pueden dividir cada premio entre dos o tres personas, aunque no está permitido repartirlo entre más de tres. Si se considerara que más de tres personas merecen el premio, se concedería de forma conjunta. El fondo está controlado por un comité de la Fundación Nobel, compuesto por seis miembros en cada mandato de dos años: cinco elegidos por los administradores de los organismos contemplados en el testamento, y el sexto nombrado por el Gobierno sueco. Los seis miembros serán ciudadanos suecos o noruegos. De acuerdo con la voluntad de Nobel, se han establecido institutos separados en Suecia y Noruega para favorecer los objetivos de la Fundación con el fin de potenciar cada uno de los cinco campos en los que se conceden los galardones. En 1968, para conmemorar su 300 aniversario, el Banco Nacional de Suecia creó el Premio de Ciencias Económicas Banco de Suecia en Memoria de Alfred Nobel, que sería otorgado por la Real Academia Sueca de las Ciencias (conocida con anterioridad por el nombre de Academia Sueca de las Ciencias). La Real Academia Sueca de las Ciencias concede también los premios de Física y Química.

23. Dr. Alfred Day Hershey Dr. alfred Day hershey. 1908 1997. 1969 nobel Laureate in Medicine, Mr. hersheywas born on Dec. 4, 1908 at 515 E. Mason St. Owosso, MI, to Robert D. and Alma http://www.angelfire.com/mi2/shiawassee/hershey.html

Dr. Alfred Day Hershey 1969 Nobel Laureate in Medicine , Mr. Hershey was born on Dec. 4, 1908 at 515 E. Mason St. Owosso, MI, to Robert D. and Alma (Wilber) Hershey. He graduated from Owosso High School in about 1925 and later graduated from Michigan State University. Mr. Hershey became a geneticist and in 1969 was the recipient of a Nobel Prize for Medicine and Physiology for the discovery concerning the replication mechanism and the genetic structure of viruses. Dr. Hershey and two other fellow scientist claimed the Prize. He was affiliated with the Carnegie Institution of Washington, Long Island, New York, NY Alfred Day Hershey graduated from Washington University Carnegie Institution of Washington, Dept. of Genetics, Cold Spring Harbor in 1950. He shared the Nobel prize with Max Delbruck and Salvador Luria. Dr. Hershey was working on a little-studied organism called bacteriophage with phage researcher J.J. Bronfenbrenner at Washington University in St. Louis when he received a letter from a German scientist at Vanderbilt University, Max Delbruck . Delbruck said he had been reading Hershey's papers and was quite interested. He and Salvador Luria , had been studying phage themselves, and found interesting results. They invited Hershey to Nashville to see their lab and do some experiments. In 1943, Hershey formed the third point in the nucleus of the nascent American phage group. Hershey tells the story that in the late 1940s he and Luria both received job offers from the Carnegie's Department of Genetics at Cold Spring Harbor and Indiana University. Hershey was a quiet sort who mostly liked to be in lab doing experiments. Luria on the other hand, loved the excitement and stimulation of university life. Hershey went to CSH in 1950.

24. Premio Nobel De Medicina - Wikipedia Translate this page Ver enlace http//www.nobel.se/medicine/laureates/index.html. Bernard Katz, Ulfvon Euler, Julius Axelrod 1969 Max Delbrück, alfred D. hershey, Salvador E http://es.wikipedia.org/wiki/Premio_Nobel/Medicina

Portada Cambios Recientes Edita esta página Historia Páginas especiales Preferencias de usuario Mi lista de seguimiento Cambio Recientes Subir una imagen Lista de imágenes Usuarios registrados Estadísticas del sitio Artículo aleatorio Artículos huérfanos Imágenes huérfanas Artículos populares Artículos más solicitados Artículos cortos Artículos largos Artículos nuevos Todas las páginas (alfabético) Direcciones IP bloqueadas Página de mantención Fuentes externas de libros Versión para imprimir Discusión Registrase/Entrar Ayuda Premio Nobel de Medicina (Redirigido desde Premio Nobel/Medicina Ver enlace: http://www.nobel.se/medicine/laureates/index.html Leland H. Hartwell R. Timothy Hunt Paul M. Nurse ... Harold E. Varmus Sir James W. Black Gertrude B. Elion George H. Hitchings Susumu Tonegawa ... Barbara McClintock for transposon work. Sune K. Bergström Bengt I. Samuelsson John R. Vane Roger W. Sperry ... Earl W. Sutherland, Jr. Sir Bernard Katz Ulf von Euler Julius Axelrod Max Delbrück ... Feodor Lynen Sir John Carew Eccles Alan Lloyd Hodgkin Andrew Fielding Huxley Francis Harry Compton Crick ... Georg von Békésy Sir Frank Macfarlane Burnet Peter Brian Medawar Severo Ochoa Arthur Kornberg ... Dickinson W. Richards

25. Themes Geography History History Prize Winners Nobel Themes Geography History History Prize Winners nobel Prize Medicine.Year, Winners. 1969, Delbrück, Max hershey, alfred D. - Luria, Salvador E. http://www.cartage.org.lb/en/themes/GeogHist/histories/prizewinners/nobelprize/m

Themes History Prize Winners Nobel Prize Year Winners Behring, Emil Adolf von Ross, Ronald Finsen, Niels Ryberg Pavlov, Ivan Petrovich ... Bárány, Robert The prize money was allocated to the Special Fund of this prize section The prize money was allocated to the Special Fund of this prize section The prize money was allocated to the Special Fund of this prize section The prize money was allocated to the Special Fund of this prize section Bordet, Jules Krogh, Schack August Steenberg The prize money was allocated to the Special Fund of this prize section Hill, Archibald Vivian Meyerhof, Otto Fritz Banting, Frederick Grant Macleod, John James Richard ... Einthoven, Willem The prize money was allocated to the Special Fund of this prize section Fibiger, Johannes Andreas Grib Wagner-Jauregg, Julius Nicolle, Charles Jules Henri Eijkman, Christiaan ... Domagk, Gerhard The prize money was 1/3 allocated to the Main Fund and 2/3 to the Special Fund of this prize section The prize money was 1/3 allocated to the Main Fund and 2/3 to the Special Fund of this prize section The prize money was 1/3 allocated to the Main Fund and 2/3 to the Special Fund of this prize section Dam, Henrik Carl Peter

26. Nature Publishing Group Search Engine receive their due in We can sleep later alfred D. hershey and hershey, who diedin 1997 at the age of 88 He shared the nobel Prize in 1969 with Max Delbrück http://www.nature.com/cgi-taf/DynaPage.taf?file=/nsb/journal/v8/n1/full/nsb0101_

27. Phage Facts and Delbrück and the Waring blender experiments of hershey and Chase for which theywere awarded the nobel Prize in Later, when alfred D. hershey and Martha http://www.nature.com/cgi-taf/DynaPage.taf?file=/nsb/journal/v8/n1/full/nsb0101_

28. PREMIOS NOBEL RELACIONADOS CON LA GENÉTICA Translate this page 1969, Max Delbrück Salvadore E. Luria alfred D. hershey. 1970, Norman E. Borlaugh.nobel de la Paz Por su contribución a la revolución verde. 1972, http://www.ucm.es/info/genetica/AVG/nobel/nobel.htm

Alfred Nobel La mayoría de los Premios Nobel que figuran en la siguiente lista son de Fisiología y Medicina, salvo algunos de Química y de la Paz que se indican de forma expresa en la tabla. Albrecht Kossel Por sus trabajos sobre las sustancias albuminoides, incluyendo las nucleínas, que han contribuido al conocimiento de la química de las células. Karl Landsteiner Por sus descubrimientos de los grupos sanguíneos de la especie humana. Thomas H. Morgan Por su descubrimiento sobre la función de los cromosomas como portadores de la herencia. Hermann J. Muller Por su descubrimiento de la inducción de mutaciones mediante radiación con rayos X. Linus Carl Pauling Por sus investigaciones sobre la naturaleza de los enlaces químicos y su aplicación en la elucidación de la estructura de las sustancias complejas. También recibió el Premio Nobel de la Paz en 1962 por su lucha contra el desarrollo de las armas nucleares. George W. Beadle Edward L. Tatum Por su descubrimiento de que los genes actúan regulando sucesos químicos definidos.

29. Nobel Medicine Prize nobel Peace Prize for Physiology and Medicine. The nobel Peace Prize for Physiologyand Medicine dates from 1901 1969, Max Delbruck alfred D. hershey Salvador D http://www.geocities.com/Axiom43/nobelmedicine.html

Nobel Peace Prize for Physiology and Medicine The Nobel Peace Prize for Physiology and Medicine dates from 1901. Year Winner(s) Country E. von Behring Germany Sir Ronald Ross Great Britain N. R. Finsen Denmark I. P. Pavlov Russia R. Koch Germany C. Colgi S. R. y Cajal Italy Spain C. I. A. Laveran France P. Ehrich E. Metchnikoff Germany Russia T. Kocher Switzerland A. Kossel Germany A. Gullstrand Sweden A. Carrel USA C. Richet France R. Barany Austria 1915 to 1918 No Award Made J. Bordet Belgium A. Krogh Denmark No Award Made Archibald V. Hill G. Meyerhof Great Britain Germany F. C. Banting J. R. Macleod Canada Canada W. E. Einthoven Netherlands No Award Made J. Fibiger Denmark J. Wagner-Jauregg Austria C. Nicolle France C. Eijkman Sir Frederick G. Hopkins Netherlands Great Britain K. Landsteiner Austria O. Warburg Germany Sir Charles S. Sherrington

30. Premios Nobel De Medicina Translate this page Premios nobel de Fisiología y Medicina. Año, Premiado, Pais, Campo de Estudio. 1969,Max Delbrück alfred D. hershey Salvador E. Luria, Estados Unidos Estados http://www.geocities.com/coord_sur/nobelmed.html

31. Winners Of The Nobel Prize In Medicine Or Physiology nobel Prize in Medicine or Physiology. Taken from The nobel Prize Internet Archive.2000. MAX DELBRÜCK , alfred D. hershey and SALVADOR E. LURIA for their http://www.manbir-online.com/htm3/nobel-med-list.htm

Nobel Prize in Medicine or Physiology Taken from - The Nobel Prize Internet Archive The prize was awarded jointly to: A RVID C ARLSSON ... REENGARD and E RIC K ANDEL for their discoveries concerning signal transduction in the nervous system. The prize was awarded to: G ÜNTER B LOBEL , for the discovery that proteins have intrinsic signals that govern their transport and localization in the cell. The prize was awarded jointly to: R OBERT F F ... GNARRO and F ERID M URAD for their discoveries concerning nitric oxide as a signalling molecule in the cardiovascular system. S TANLEY B P ... RUSINER for his discovery of Prions - a new biological principle of infection The prize was awarded jointly to: P ETER C D ... OHERTY and R OLF M Z ... INKERNAGEL for their discoveries concerning the specificity of the cell mediated immune defence. The prize was awarded jointly to: E DWARD B L ... OLHARD and E RIC F W ... IESCHAUS for their discoveries concerning the genetic control of early embryonic development. The prize was awarded jointly to: A LFRED G G ... ILMAN and M ARTIN R ODBELL for their discovery of G-proteins and the role of these proteins in signal transduction in cells.

32. Nobel For Medicine: All Laureates Katz, Ulf von Euler, Julius Axelrod 1969 Max Delbrück, alfred D. hershey, SalvadorE The nobel Prize A History of Genius, Controversy and Prestige by http://www.popular-science.net/nobel/med-list.html

NOBEL Read More on the Nobel Prize: Nobel Minds 2001 Awards John Nash Women Nobel Prize ... Prize Amounts MINI ALMANAC Calendar Moon phase Popular Science Highlights: IG Nobel 2002 The invention of :-) West Nile Virus Asteroid Impact? ... Book: Russell Read also: Nobel Prize Women in Science : Their Lives, Struggles, and Momentous Discoveries by Sharon Bertsch McGrayne THE NOBEL PRIZE FOR MEDICINE: ALL WINNERS 2001 Leland H. Hartwell, R. Timothy Hunt, Paul M. Nurse 2000 Arvid Carlsson, Paul Greengard, Eric R. Kandel 1999 Günter Blobel 1998 Robert F. Furchgott, Louis J. Ignarro, Ferid Murad 1997 Stanley B. Prusiner 1996 Peter C. Doherty, Rolf M. Zinkernagel 1995 Edward B. Lewis, Christiane Nüsslein-Volhard, Eric F. Wieschaus 1994 Alfred G. Gilman, Martin Rodbell 1993 Richard J. Roberts, Phillip A. Sharp 1992 Edmond H. Fischer, Edwin G. Krebs

33. Mol-Biol 4 Masters Max Delbruck, alfred D.hershey, Salvador E.Luria, 1969, awarded nobel Prize inMedicine and Physiology for their work on genetics and structure of viruses. http://www.mol-biol4masters.com/milestones.html

Your browser does not support script Milestones: Friedrich Miescher-1869 identified Nuclein from pus cells. Feulgan 1927-28 demonstrated two types of Nucleic acids, i.e. DNA and RNA. Frederick Grifith-1928 demonstrated genetic transformation principle. Erwin Chargaff-1940, showed quantitative equivalence of total purine to total pyrimidines, i.e. A=T, G=C and A+T = G+C, Oswald Avery, Colin McLeod and MacLean McCarty-1944, demonstrated experimentally that DNA as the genetic material, they used pneumococcus virulence and nonvirulent strains. Alfred Hershey and Martha Chase-1952, ultimate demonstration of DNA as the genetic material, using radioisotope labeled T2 phages. James Watson and Francis Crick –1952-53, a crowning achievement in proposing a 3-D model of DNA, a double helix. Rosalind Franklin and Maurice Wilkins provided x-ray diffraction data. Jerry Donahue an office mate of J.D.Watson provided the clue about the correct base tuatomeric states. Beadle, Joshuua Lederberg, Edward L.Tatum, 1958

34. Alfred D. Hershey: Awards Won By Alfred D. Hershey 123Awards hardwork is paid in form of awards. Awards of alfred D. hershey. OTHERnobel,1969, MEDICINE. Enter Artist/Album. Partner Sites. Stardose.com. RealLyrics.com. http://www.123awards.com/artist/101.asp

hardwork is paid in form of awards Awards of Alfred D. Hershey OTHER-NOBEL MEDICINE Enter Artist/Album Partner Sites Stardose.com RealLyrics.com OnlyHitLyrics.com Biography Search Engine ... privacy

35. Prix Nobel De Physiologie Ou Médecine - Wikipedia Un article de Wikipédia, l'encyclopédie libre. Les prix nobel de physiologieet médecine. 1969 Max Delbrück, alfred D. hershey, Salvador E. Luria. http://fr.wikipedia.org/wiki/Prix_Nobel_de_Physiologie_ou_Médecine

Accueil Modifications récentes Modifier cette page Historique Pages spéciales Préférences Liste de suivi Modifications récentes Copier un fichier Liste des images Liste des participants Statistiques Une page au hasard Pages orphelines Images orphelines Les plus populaires Les plus demandées Articles courts Articles longs Nouvelles pages Toutes les pages Adresses IP bloquées Page de Maintenance Librairies en ligne Version imprimable Discuter Identification Aide Autres langues: Deutsch Dansk Español English ... Nederlands Prix Nobel de Physiologie ou Médecine Un article de Wikipédia, l'encyclopédie libre. Les prix nobel de physiologie et médecine Emil Adolf von Behring Ronald Ross Niels Ryberg Finsen Ivan Petrovich Pavlov ... Christiaan Eijkman , Sir Frederick Gowland Hopkins Karl Landsteiner Otto Heinrich Warburg Sir Charles Scott Sherrington Edgar Douglas Adrian Thomas Hunt Morgan George Hoyt Whipple ... Hans Spemann Sir Henry Hallett Dale Otto Loewi Albert von Szent-Györgyi Nagyrapolt Corneille Jean François Heymans ... Herbert Spencer Gasser Sir Alexander Fleming Ernst Boris Chain , Sir Howard Walter Florey Hermann Joseph Muller Carl Ferdinand Cori Gerty Theresa , née Radnitz Cori, Bernardo Alberto Houssay Paul Hermann Müller Walter Rudolf Hess Antonio Caetano De Abreu Freire Egas Moniz ... Dickinson W. Richards

36. 20th Century Year By Year1969 nobel Prizes. MAX, USA, California Institute of Technology, Pasadena, CA, b. 1906,(in Berlin, Germany), d. 1981; hershey, alfred D., USA, Carnegie http://www.multied.com/20th/1969.html

Major Event/ Sports Nobel Prizes Pulitzer Prizes ... Popular Book s / Popular Television Shows Popular Music/ Grammy Awards/ Tony Awards Major Events of 1969 Juan Carlos Succeeds Non-Proliferation Agreement Violence in N. Ireland The Return of Okinawa ... Concorde Airborne Sports NBA: Boston Celtics vs. LA Lakers Series: 4-3 NCAA Football: Texas Record: 11-0-0 Heisman Trophy: Steve Owens, Oklahoma, HB points: 1,488 Stanley Cup: Montreal Canadiens vs. St. Louis Blues Series: 4-0 Super Bowl III: New York Jets vs. Baltimore Ravens Score: 16-7 US Open Golf: Orville Moody Score: 281 Course: Champions GC Location: Houston, TX World Series: New York Mets vs. Baltimore Orioles Series: 4-1 Top Songs of 1969 1."Crimson and Clover" ... Tommy Jones & the Shoulders 2."Everday People" ... Sly and the Family Stone 3."Dizzy" ... Tommy Roe 4."Aquarius/Let the Sunshine In" ... The Fifth Dimension 5."Get Back" ... The Beatles and Billy Preston 6."Love Theme From 'Romeo & Juliet'" ... Henry Mancini

37. Directory :: Look.com hershey, alfred Day (3) Sites. alfred D. Hersey Information on the nobel prize awardedin 1969, with Max Delbrück and Salvador E. Luria, for their discoveries http://www.look.com/searchroute/directorysearch.asp?p=5858314

38. Nobel Prize For Physiology Or Medicine nobel Prize for Physiology or Medicine. and Marshall W. Nirenberg (all US), for studiesof genetic code 1969 Max Delbruck, alfred D. hershey, and Salvador E http://www.factmonster.com/ipa/A0105787.html

Huge assortment of web cameras, spycams and live surveillance products - at great prices ! Bargain.com.. Movies , videos with your favorite celebrity ! Magazines, newsletters, stories and pics from around the world! All Infoplease All Almanacs General Entertainment Sports Biographies Dictionary Encyclopedia Infoplease Home Almanacs Atlas Dictionary ... Fact Monster Kids' reference Info:Daily Fun facts Homework Center Newsletter You've got info! Help Site Map Visit related sites from: Family Education Network Arts and Entertainment Awards Nobel Prizes Nobel Prize for Physiology or Medicine For years not listed, no award was made. Emil A. von Behring (Germany), for work on serum therapy against diphtheria Sir Ronald Ross (U.K.), for work on malaria Niels R. Finsen (Denmark), for his treatment of lupus vulgaris with concentrated light rays Ivan P. Pavlov (U.S.S.R.), for work on the physiology of digestion Robert Koch (Germany), for work on tuberculosis Camillo Golgi (Italy) and (Spain), for work on structure of the nervous system Charles L. A. Laveran

39. Information Please: 1969 Kurt Vonnegut, SlaughterhouseFive. Science. nobel Prizes in Science Physiologyor Medicine Max Delbruck, alfred D. hershey, and Salvador E. Luria (all US http://www.factmonster.com/year/1969.html

World U.S. Economics Sports ... Year by Year: 1900-2002 World Events World Statistics Population: 3.631 billion population by decade Nobel Peace Prize: International Labour Organization More World Statistics... Nixon begins "Vietnamization" in Southeast Asia. Background: Vietnam War The United States, USSR, and about 100 other countries sign the nuclear nonproliferation treaty (NPT). Background: nuclear disarmament Russian and Chinese troops clash along the Ussuri River. 27-year-old Colonel Muammar al-Qaddafi deposes King Idris of Libya and establishes a pro-Arabic, anti-Western, Islamic republic. More History... U.S. Events U.S. Statistics President: Richard M. Nixon Vice President: Spiro T. Agnew Population: Life expectancy: 70.5 years Violent Crime Rate (per 1,000): Property Crime Rate (per 1,000): Homicide Rate (per 100,000): More U.S. Statistics... Richard M. Nixon is inaugurated 37th President of the US (Jan. 20). Stonewall riot in New York City marks beginning of gay rights movement (June 28). Sen. Edward M. Kennedy pleads guilty to leaving scene of fatal accident at Chappaquiddick, Mass.

40. .::NoTaBlE SCiEnTiStS::. For More Info Click This alfred D. hershey Barbara McClintock. Barbara McClintockwas an American Geneticist. In 1983, she received the nobel Prize in http://biology.damien.edu:16080/~jcabudoy/ns.htm

**Scientists** Alfred Bernhard Nobel Alfred Bernhard Nobel was a Swedish chemist and industrialist. He was credited for the invention of dynamite. Through this invention became very wealthy from its profits. After he dies, in his will he wrote that some of his fortune should be used to endow annual Nobel prizes. He left approximately nine million dollars for these prizes. The prizes are awarded yearly to people whose work most benefited humanity. There are six different Nobel Prizes. They are the Nobel Peace Prize, the Nobel Prize in Physics, the Nobel Prize in Chemistry, the Nobel Prize in Physiology or Medicine , the Nobel Prize in Literature, and finally the Nobel Prize in Economic Sciences. For More Info Click This: Alfred Nobel James Dewey Watson James Dewey Watson was an American biochemist at Cold Springs Harbor Laboratory. In 1962, he received the Nobel Prize in Physiology or Medicine. He shared the prize with Francis Harry Compton Crick and Maurice Hugh Frederick Wilkins for their discovering of the molecular structure of DNA and its significance for information transfer in living material. DNA takes the shape of double helix resembling a ladder made of a pair of nitrogen containing nucleotides. They emerged the field of molecular biology into their work to understand the structure. For More Info Click This: James Dewey Watson Alfred Day Hershey Alfred Day Hershey was on American geneticist and biologist. In 1969, he received the Nobel Prize in Physiology or Medicine. He shared the prize with Max Delbruk and Salvador E. Luria for their discovering of the genetic structure of viruses and concerning the replication mechanism. To figure this out, they used bacteriophages, bacteria infecting viruses, in their studies. In 1952, they discovered that DNA is the molecule that stores genetic info in living cells with the help of Martha Chase. In 1962, Alfred became the director of Genetics Research Unit in the Department of Genetics at Carnegie Institution of Washington.

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