1) Anatomical features that have different functions but similar underlying structures due to recent shared ancestry eg. human arm, dolphin flipper, bat wing a) Transitional Fossils b) Comparative Anatomy c) Analogous Structures d) Homologous Structures 2) Anatomical features that have the same function but very different underlying structures because they do NOT share recent common ancestry eg. bird wings and insect wings a) Vestigial Structures b) Molecular Clock c) Homologous Structures d) Analogous Structures 3) The higher the number of shared anatomical features the more recently two species diverged from a common ancestor. a) Biogeography b) DNA Similarity c) Fossil Record d) Comparative Anatomy 4) Anatomical features that are no longer used but reveal shared ancestry with another species eg. whale pelvis bone a) Vestigial Structures b) Fossil Record c) Homologous Structures d) Radiometric Dating 5) Shared anatomical features between embryos reveal what traits their ancestor may have had eg. all vertebrate animal embryos have gills a) Fossil Record b) Embryo Similarities c) Homologous Structures d) Transitional Fossils 6) Change in species over time preserved in rocks a) Homologous Structures b) Embryo Similarities c) Vestigial Structures d) Fossil Record 7) Method for finding the age of a fossil using the steady rate of decay of radioactive isotopes eg. Carbon dating a) Transitional Fossils b) Comparative Anatomy c) Radiometric Dating d) Embryo Similarities 8) Fossil specimens that show the steps of change between an ancestor species and the modern day species eg. horse hooves a) Vestigial Structures b) Molecular Clock c) Transitional Fossils d) Homologous Structures 9) The higher the percentage of similar base pairs shared between two living species the more recently they diverged from each other eg. humans and chimpanzees have 99.9% similar DNA a) Fossil Record b) DNA Similarity c) Molecular Clock d) Biogeography 10) Species found in the same geographic location are more likely to have shared a recent common ancestor EXCEPT for when continents have drifted apart a) Biogeography b) Molecular Clock c) Vestigial Structures d) Homologous Structures 11) Steady known rate of mutation in some genes can be used to estimate how long ago two living species last shared a common ancestor eg. mitochondrial DNA a) Transitional Fossils b) DNA Similarity c) Fossil Record d) Molecular Clock

Bio 3: Human Evolution

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