battledore (plural battledores) 1  A game played with a shuttlecock and rackets (properly battledore and shuttlecock); a forerunner of badminton. 2  The racket used in this game. ( 3 obsolete) A child's hornbook for learning the alphabet. ( obsolete) A bat or beetle used in washing clothes.
Watson is a U.S. molecular biologist, geneticist and zoologist, best known as one of the co-discoverers of the structure of DNA in 1953 with Francis Crick. In 1998, the Modern Library placed The Double Helix at number 7 on its list of the 100 best nonfiction books of the 20th century.
DNA was first isolated by Friedrich Miescher in 1869. Its molecular structure was identified by James Watson and Francis Crick in 1953, whose model-building efforts were guided by X-ray diffraction data acquired by Raymond Gosling, who was a post-graduate student of Rosalind Franklin.