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What it argues
Why Evolution Is True is evolutionary geneticist Jerry Coyne's systematic case for evolution, written for readers who want a rigorous but accessible treatment of the evidence. Coyne, a professor at the University of Chicago, approaches the question as a scientist rather than a polemicist: he lays out what evolution predicts, examines whether the evidence matches, and considers what would count as falsification. The book is organized by type of evidence — the fossil record, vestigial organs, biogeography, natural selection in action, sexual selection, and the origin of species.
The fossil record chapters are careful about what the evidence shows and where the gaps are. Coyne is direct: if evolution is true, we expect transitional forms connecting major groups, and we find them. Tiktaalik, the fish-tetrapod transitional form discovered in 2004, gets detailed treatment. So does the horse series and the whale evolution sequence — the accumulation of fossil evidence documenting the transition from land mammals to fully aquatic whales, complete with intermediate forms showing functional legs.
What it gets right
- 1.
Evolution is as well-supported as any theory in science. The converging evidence from genetics, the fossil record, biogeography, comparative anatomy, and direct observation leaves no serious scientific alternative.
- 2.
The whale fossil sequence — showing fully land-dwelling ancestors transitioning through forms with functional legs to fully aquatic animals — is one of the most complete and compelling transitional series in the record.
- 3.
Tiktaalik, discovered in 2004 in rocks of the predicted age, shows a fish with proto-limb structures. It was found where and when evolutionary theory predicted a fish-tetrapod transition would be.
What it covers
Who wrote it
Jerry A. Coyne is an evolutionary geneticist and professor emeritus at the University of Chicago, where he spent his career studying speciation and evolutionary genetics. He is the author of Speciation (with H. Allen Orr), a technical textbook on the evolutionary mechanisms of species formation, and Why Evolution Is True, written for a general audience. Coyne also maintained a long-running blog, Why Evolution Is True, before retiring it. He received his PhD from Harvard under Richard Lewontin and is widely respected in evolutionary biology for both his research and his science communication.
