The crossword solution for the term 'Biologist Author' is J.B.S. Haldane, a British scientist and writer who was born in 1892. He was a pioneering geneticist and evolutionary biologist, and wrote extensively on topics such as genetics, evolution, and philosophy. He was also a prolific author, writing books such as Daedalus: Science and the Future and The Causes of Evolution. Haldane's work has had a lasting impact on the field of biology, and he is remembered as one of the most influential biologists of the 20th century.