The term 'AUTHOR BIOLOGIST' can be summarized by two crossword solutions: Haldane (7 letters) and Elie (4 letters). J.B.S. Haldane was a British scientist who made significant contributions to the field of evolutionary biology in the early 20th century. He is best known for his work on population genetics and natural selection. Elie Wiesel was a Romanian-born Jewish writer, professor, political activist, Nobel Laureate, and Holocaust survivor. He is best known for his book Night, which recounts his experiences during the Holocaust.