2Main Types of Evidence of Evolution FossilsComparing Anatomical StructuresSimilar embryo developmentGeographical distributionBiochemical Evidence
3Fossil RecordFossils are evolutionary evidence. Fossils can be preserved bones, footprints, or organismsFossils show that ancient species share similarities with species that now live on Earth.Fossils records provide evidence that living things have changed over time.GlyptodontArmadillo
7Homologous structures Anatomically similar structures inherited from a common ancestorThese structures can be SIMILIAR in arrangement and/or function
8Analogous StructuresStructures that do not have a common evolutionary origin but are NOT similar in structure, but similar in FUNCTION.Shows that functionally similar features can evolve independently of each otherEx: wing of an insect and wing of bird
10What the difference between analogous and homologous structures? Analogous StructureHomologous StructureCommon Ancestor/OriginNOYESSimilar Arrangement or FormSimilar FunctionYES- DIRECTLY RELATED FUNCTIONEX: flying, swimmingYES- SOMEWHAT RELATED FUNCTIONEx: movement
11Vestigial StructuresA body structure that has no function in a present-day organism but was probably useful to an ancestor.This shows a change over time
13Comparing EmbryosEmbryo: the earliest stage of growth and development of both plants and animalsVertebrate embryos exhibit homologous structures during certain phases of development but become totally different structures in the adult forms.
14Comparing EmbryosSimilar embryo development may suggest a common ancestor
15Biochemical EvidenceCommon ancestry can be seen in the complex metabolic molecules that many different organisms share.Comparison of the DNA or RNA of different species produce biochemical evidence for evolution
16Biochemical EvidenceComparisons of the similarities in amino acids and other molecules across species reflect evolutionary patterns seen in comparative anatomy and in the fossil record.
17Geological Distribution Similar animals are found in different locations around the world.Animals ended up evolving similar features for their environment because of their location on earthThey look the same but live in different areas
18Knowledge CheckTrue or False Organisms with similar anatomy share similar DNA sequences.
19Knowledge Check analogous structures embryological structures Which features are similar in use and evolve insimilar environments, but do not evolve from acommon ancestor?analogous structuresembryological structureshomologous structuresvestigial structures
20Knowledge CheckWhich of the following best explains how the fossil record provides evidence that evolution has occurred?A It indicates the exact cause of structural and behavioral adaptations of organisms.B It shows that the form and structure of groups of organisms have changed over time.C It shows how the embryos of many different vertebrate species are very similar.D It indicates that forms of life existed on Earth at least 3.5 billion years ago.
21Knowledge CheckThe occurrence of the same blood protein in a group of species provides evidence that these species a. evolved in the same habitat. b. evolved in different habitats. c. descended from a common ancestor. d. descended from different ancestors.