BIOL 1001 : Exam 2 Study Guide
Document Summary
Definitions: uniformitarianism- **charles lyell** earths present landscape was produced by past action of the same gradual geologic processes that we observe today. Questions: be able to explain how the theory of evolution developed from the early 1700s. **georges louis leclerc** original creation provided a relatively small number of founding species and that some modern species had been conceived by nature and produced by time . He observed that older fossils tend to be simple, whereas younger fossils tend to be more complex and more like existing organisms. He was the first to propose a mechanism for evolution. Evolution: change over time in the traits (or allele frequency) of a population. Comparative anatomy- gives evidence of descent with modification. Comparing the bodies of organisms of species can reveal similarities from shared ancestry. Homologous structures- have the same evolutionary origin despite any differences in current function of appearance. Vestigial structures- structures that serve no apparent purpose.
