J.B.S. Haldane
John Burdon Sanderson Haldane FRS (3 November 1892 – 1 December 1964), known as Jack (but who used 'J.B.S.' in his printed works), was a British geneticist and evolutionary biologist who emigrated to India towards the end of his life. He was one of the founders (along with Ronald Fisher and Sewall Wright) of population genetics.