Hal·dane 
(hôldān′, -dən), J(ohn) B(urdon) S(anderson) 1892-1964.
(hôldān′, -dən), J(ohn) B(urdon) S(anderson) 1892-1964. British geneticist whose work on the mathematics of natural selection influenced the development of modern evolutionary biology. He also wrote articles and books on science for a general audience.