central to examining some of the major questions in experimental biology. He defined the complexity of an organism as the number of types of cells in it though complexity theorists disagree, and he argued that both plant and animal taxa which have evolved later, have a greater number of cell types than their predecessors, and sought an explanation acceptable to neo-Darwinism. His works include: The Cellular Slime Molds The Evolution of Complexity by Means of Natural Selection. The Evolution of Culture in Animals Life Cycles Morphogenesis: an Essay on Development On Development: The Biology of Form, Harvard University Press Cells and Societies First Signals The Ideas of Biology Sixty Years of Biology Size and Cycle Why Size Matters: From Bacteria to Blue Whales Lives of a Biologist: Adventures in a Century of Extraordinary Science, Harvard University Press. Randomness in Evolution. Princeton University Press, Princeton, NJ 2013, . His autobiography, Lives of a Biologist: Adventures in a Century of Extraordinary Science was the winner of the 2002 ForeWord Magazine Book of the Year Award. Support for evolution Bonner was involved with one of the earliest American efforts to express scientific support for evolution. The Nobel Prize–winning American biologist Hermann J. Muller circulated a petition in May 1966 entitled: "Is Biological Evolution a Principle of Nature that has been well established by Science?". Bonner signed this manifesto, along with 176 other leading American biologists, including several Nobel Prize winners. See also Biology Today, college-level biology textbook, contribution by Bonner Notes References Lives of a Biologist: Adventures in a Century of Extraordinary Science, John Tyler Bonner, Harvard University Press, May 24, 2002, On Growth and Form, D'Arcy Wentworth Thompson, John Tyler Bonner (editor), Cambridge University Press; Abridged edition, July 31, 1992, Why Size Matters: From Bacteria to Blue Whales, John Tyler Bonner, Princeton University Press, September 13, 2006, On Size and Life (Scientific American Library), Thomas McMahon, John Tyler Bonner, Scientific American Library, May 1985, Sixty Years of Biology, John Tyler Bonner, Princeton University Press, July 8, 1996, Size and Cycle: An Essay on the Structure of Biology, John Tyler Bonner, Princeton University Press, January 1966, The Ideas of Biology, John Tyler Bonner, Dover Publications; New Ed edition, November 11, 2002, The Evolution of Culture in Animals, John Tyler Bonner, Princeton University Press, May 1, 1983, Evolution and Development (Life Sciences Research Report), John Tyler Bonner, Springer, February 1982, Life Cycles, John Tyler