Ch 22: Descent with Modification
Ch 22: Descent with Modification Charles Darwin published On the Origin of Species by Means of Natural Selection (November 24, 1859) Origin of Species- focused biologists? attention on the great diversity of organisms a. Origins and relationships, similarities and differences, geographic distribution, adaptations to surrounding environments b. Presented evidence that the many species of organisms presently inhabiting Earth are descendants of ancestral species that were different from the modern species c. Proposed a mechanism for this evolutionary process Natural Selection Natural Selection- population can change over generations if individuals that possess certain heritable traits leave more offspring than other individuals