Hermann Joseph Muller -LRB- or H. J. Muller -RRB- -LRB- December 21, 1890 -- April 5, 1967 -RRB- was an American geneticist, educator, and Nobel laureate best known for his work on the physiological and genetic effects of radiation -LRB- X-ray mutagenesis -RRB- as well as his outspoken political beliefs.
Hermann Joseph Muller, gÃ © nÃ © ralement connu sous le nom de H.J. Muller, -LRB- le 21 dÃ © cembre 1890 â €"5 avril 1967 - RRB- est un gÃ © nÃ © tique, un Ã © ducateur et un prix Nobel amÃ © ricain.