molecular biologist, genetic basis of trinucleotide repeat diseases and cancer Martha M. Howe, US phage geneticist, notable contributions to the study of phage Mu T. C. Hsu (1917–2003), distinguished Chinese-American cell biologist, geneticist, cytogeneticist Thomas J. Hudson (born 1961), Canadian genome scientist, maps of human and mouse genomes David Hungerford (1927–1993), US co-discoverer of Philadelphia chromosome in CML Tim Hunt (born 1943), UK biochemist, Nobel Prize for discovery of cyclins in cell cycle control Charles Leonard Huskins (1897–1953), English-born Canadian cytogeneticist at McGill University and University of Wisconsin–Madison I Harvey Itano (1920–2010), American biochemist and pioneer in the study of sickle cell disease J François Jacob (1920–2013), French biologist, won Nobel Prize for bacterial gene control Patricia A. Jacobs (born 1934), Scottish human geneticist and cytogeneticist Albert Jacquard (1925–2013), French geneticist, essayist, humanist, activist Rudolf Jaenisch (born 1942), German cell biologist, created transgenic mice, leader in therapeutic cloning Richard Jefferson (born 1956), US molecular plant biologist in Australia, reporter gene system GUS Alec Jeffreys (born 1950), British geneticist, developed DNA fingerprinting and DNA profiling techniques Niels Kaj Jerne (1911–1994), Danish, greatest theoretician in modern immunology, Nobel Prize Elizabeth W. Jones (1939–2008) US yeast geneticist, first to complete the University of Washington graduate genetics program Wilhelm Johannsen (1857–1927), Danish botanist who in 1909 coined the word "gene" Jonathan D. G. Jones (born 1954), British plant molecular biologist Steve Jones (born 1944), British evolutionary geneticist and malacologist Christian Jung (born 1956), German plant geneticist and molecular biologist K Dronamraju Krishna Rao (1937–2020), Indian born geneticist, founder of Foundation of Genetic Research Elvin Kabat (1914–2000) US immunochemist, a founder of modern immunology, antibody-combining sites Henrik Kacser (1918–1995), Romanian-born UK biochemist and geneticist, worked on metabolic control Axel Kahn (1944–2021), French scientist and geneticist, known for work on genetically modified plants Patricia Kailis (1933–2020), Australian geneticist Franz Josef Kallmann (1897–1965), German-US psychiatrist, pioneer in genetics of psychiatric diseases Wojciech Karlowski (born 1966), Polish molecular biologist specializing in molecular genetics and genomics Gopinath Kartha (1927–1984), Indian biophysicist, co-discovered triple-helix structure of collagen Berwind P. Kaufmann (1897–1975), US botanist, did research in basic plant and animal cytogenetics John Kendrew (1917–1997), UK crystallographer, won Nobel Prize for structure of myoglobin Cynthia Kenyon (born c. 1955), US molecular biologist, genetics of aging in the worm C. elegans Warwick Estevam Kerr (1922–2018) Brazilian expert in the genetics and sex determination of bees Bernard Kettlewell (1907–1979), UK physician, lepidopterist, ecological