Why Evolution Is True Pdf?

Why Evolution Is True: A Book Review

Why Evolution Is True is a book written by evolutionary biologist Jerry A. Coyne, published in 2009. The book presents evidence for the theory of evolution and refutes arguments against it, including those based on religion and intelligent design. This article will review the book and summarize its main arguments.


Why Evolution Is True is a comprehensive introduction to the evidence for evolution. The book covers a wide range of topics, including fossil records, biogeography, embryology, molecular biology, and natural selection. The author argues that these pieces of evidence all support the theory of evolution and that they are incompatible with alternative explanations, such as creationism.

Chapter 1: What Is Evolution?

The book begins with a definition of evolution as the process by which populations of organisms change over time. The author provides a brief history of the theory of evolution, from Charles Darwin’s Origin of Species to modern molecular biology. The chapter concludes by introducing the concept of “descent with modification,” which is a central idea in the theory of evolution.

Chapter 2: Written in the Rocks

This chapter presents evidence for evolution from the fossil record. The author describes the process of fossilization and how fossils can be used to infer the evolutionary relationships between species. He also addresses common arguments against the fossil record, such as the supposed “missing link” between humans and apes.

Chapter 3: Remnants: Vestiges, Embryos, and Bad Design

This chapter discusses evidence for evolution from vestigial structures, such as the human tailbone and appendix, as well as from embryonic development. The author argues that these structures make sense in light of evolution but are difficult to explain from a creationist perspective. He also refutes arguments from “bad design” in nature as evidence for a creator.

Chapter 4: The Geography of Life

Biogeography, the study of the distribution of organisms around the world, is the focus of this chapter. The author argues that the patterns of biogeography make sense in light of evolution but are difficult to explain from a creationist perspective. He also discusses the concept of convergent evolution, in which different organisms evolve similar traits independently.

Chapter 5: The Engine of Evolution: Natural Selection

This chapter introduces the concept of natural selection as the driving force behind evolution. The author describes how natural selection works, using examples such as the evolution of antibiotic resistance in bacteria. He also addresses common misconceptions about natural selection, such as the idea that it is a random process.

Chapter 6: The Origin of Species

The final chapter of the book discusses the origin of new species through the process of speciation. The author describes the different mechanisms of speciation, such as geographic isolation and hybridization. He also addresses the question of whether evolution has a direction or goal.


Why Evolution Is True is a compelling introduction to the evidence for evolution. The author presents a wealth of evidence from different fields of biology and demonstrates how they all support the theory of evolution. The book is accessible to both lay readers and those with a background in biology, making it an excellent resource for anyone interested in understanding the science behind evolution.

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