More Related Content Similar to Unit 9 evolution Similar to Unit 9 evolution (20) Unit 9 evolution21. Father of modern Geology Sir Charles Lyell (1797-1875) Explain his law of uniformitarianism to your table partner and provide an example? 23. Tree rings can identify absolute dates based on their annual growth of tissues. 26. Using relative and absolute dating methods, paleontologists have created a geologic time scale from the layers of sedimentary rock. 27. Relative Dating of rock layers and fossils/environments: Which rocks and fossils are the oldest? Why? 29. As you examine the geologic time scale note the key events, simple to complex progression of life, mass extinctions, and humans position relative to other life forms. 52. 1889 August Weisman cut the tails off of hundreds of mice for 22 generations to disprove Lamark. OUCH! 53. 1844 Darwin and Wallace formulated the theory of natural selection as the driving force for evolution. 55. Where do you think most of the variation for a population originates? 56. While it is true that mutations account for variation most variations come from existing combinations of alleles. (remember them?) 67. Adaptive Radiation: Multiple branching of a family tree, new environments may have many available niches.