George C. Williams (biologist) should only be used where it is really necessary", and, that, when it is necessary, selection among genes or individuals would in general be the preferable explanation for it. He elaborated this view in later books and papers, which contributed to the development of a gene-centered view of evolution; Richard Dawkins built on Williams' ideas in this area in the book "The Selfish Gene". Williams was also well known for his work on the evolution of sex, and was an advocate of evolutionary medicine. In later books, including "Natural Selection: Domains, Levels and Challenges", Williams softened his views on group
The Evolution of Calpurnia Tate natural world ..." It was the recipient of numerous awards including a 2010 Newbery Honor Award, and also honored with the IRA Children's Book Award, the North Carolina Young Adult Book Award, the TN YA Volunteer State Book Award ML, the Virginia M. Law Award., the Josette Frank Award and the Judy Lopez Book Award. It was included in Chicago Public Library Best of the Best list, the Illinois Rebecca Caudill Young Readers Choice Award Master List, the Texas Lone Star Reading List and was a 2009 Junior Library Guild Selection. The Evolution of Calpurnia Tate The Evolution of Calpurnia