* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Chapter 18: Darwin and Evolution
Natural selection wikipedia , lookup
Hologenome theory of evolution wikipedia , lookup
Objections to evolution wikipedia , lookup
Sociocultural evolution wikipedia , lookup
On the Origin of Species wikipedia , lookup
Mormon views on evolution wikipedia , lookup
Jewish views on evolution wikipedia , lookup
Transitional fossil wikipedia , lookup
Unilineal evolution wikipedia , lookup
Creation and evolution in public education in the United States wikipedia , lookup
The Expression of the Emotions in Man and Animals wikipedia , lookup
Punctuated equilibrium wikipedia , lookup
Hindu views on evolution wikipedia , lookup
Genetics and the Origin of Species wikipedia , lookup
Introduction to evolution wikipedia , lookup
The Descent of Man, and Selection in Relation to Sex wikipedia , lookup
Creation and evolution in public education wikipedia , lookup
Chapter 22: Darwin and Evolution • Evolution refers to the processes that have transformed life on earth from its earliest forms to the enormous diversity that characterizes it today. • Charles Darwin published On the Origin of Species by Means of Natural Selection on November 24, 1859. It was the first convincing case for evolution. Chapter 22: Darwin and Evolution • Darwin made two major points: 1. Species evolved from ancestral species and were not specially created. 2. Natural selection is a mechanism that could result in this evolutionary change. Chapter 22: Darwin and Evolution I. A Historical Context for Evolutionary Theory. A. Western culture resisted evolutionary views of life. – The Scale of Nature and Natural Theology – Cuvier, fossils, and catastrophism Chapter 22: Darwin and Evolution I. Historical Context for Evolutionary Theory. B. Theories of geological gradualism helped clear the for evolutionary biologists. – James Hutton:Gradualism – Charles Lyell: Uniformitarianism path Chapter 22: Darwin and Evolution I. Historical Context for Evolutionary Theory. C. Lamarck placed fossils in an evolutionary context. – Use and disuse – Inheritance of acquired characteristics Chapter 22: Darwin and Evolution II. The Darwinian Revolution A. Field research helped Darwin frame his view of life. – The Voyage of the Beagle – Darwin focuses on adaptation Chapter 22: Darwin and Evolution II. The Darwinian Revolution B. The Origin of Species developed two main points: the occurrence of evolution and natural selection as its mechanism. – Descent with modification – Natural selection and adaptation Chapter 22: Darwin and Evolution III. Evidence of Evolution A. Evidence of evolution pervades biology. – Biogeography-The geographical distribution of species. – Fossil Record-It is incomplete but shows general trends in evolution. Distribution on moonjellyfish Chapter 22: Darwin and Evolution III. Evidence of Evolution A. Evidence of evolution pervades biology. – Comparative Anatomy • Homologous structures • Analogous structures • Vestigial structures Chapter 22: Darwin and Evolution III. Evidence of Evolution • Comparative Embryology • Molecular Biology-DNA Chapter 22: Darwin and Evolution III. Evidence of Evolution A. What is theoretical about the Darwinian view of life?