The Evolution of Cooperation insects, where the workers – which are sterile, and therefore incapable of passing on their genes – benefit the queen, who is essentially passing on copies of "their" genes. This is further elaborated in the "selfish gene" theory of Richard Dawkins, that the unit of evolution is not the individual organism, but the gene. (As stated by Wilson: "the organism is only DNA's way of making more DNA.") However, kinship selection works only where the individuals involved are closely related; it fails to explain the presence of altruism and cooperation between unrelated individuals, particularly across species. In a 1971 paper
Introducing Evolution Introducing Evolution Introducing Evolution is a 2001 graphic study guide to Evolution written by Dylan Evans and illustrated by Howard Selina. The volume, according to the publisher's website, "provides a step-by-step guide to ‘Darwin’s dangerous idea’ and takes a fresh look at the often misunderstood concepts of natural selection and the selfish gene." This volume was originally published in the UK by Icon Books in 2001, and subsequently republished with different covers and the subtitle, "A Graphic Guide". Editions: Related volumes in the series: Science writer Brian Clegg, author of "Introducing Infinity" (2012) in the same series, states that, "book