Download or read book Straight Science? Homosexuality, Evolution and Adaptation written by Jim McKnight and published by Routledge. This book was released on 2003-09-02 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jim McKnight examines both the biological and the social evolutionary theories of the causation of homosexuality. He considers such questions as, how the discovery of a gay gene would fit with Darwin's theory of 'survival of the fittest'.