BIOL 205 : Ch. 13 - Evolution In the Beginning.pdf
Document Summary
13. 1 a sea voyage helped darwin frame his theory of evolution. Evolution: descent with modification; the idea that living species are descendants of ancestral species that were different from present day ones; also, the genetic changes in a population from generation to generation. Fossil: a preserved remnant or impression of an organism that lived in the past. Adaptations: an inherited characteristic that enhances an organism"s ability to survive and reproduce in a particular environment. Jean baptiste lamarck- the inheritance of acquired characteristics. Sets the stage for darwin with his idea that an organisms environment can impact its adaptations and thus it"s evolution. After his voyage on the beagle, darwin collected fossils, plants and animals. He noted that island species were more similar to mainland species than other island species. Darwin realized that present day species come from a succession of ancestors.