Geographic Distribution: Distribution of plants and animals across different habitats and locations, Animals living in similar environments have similar traits, Fossil Record: A record of species that lived long ago, Shows how ancient species are similar to current species, Determines ancestry of organisms and patterns of evolution, Derived traits (feathers) do not appear in the fossils of common ancestors, Ancestral traits (teeth, nails) are more primitive features that appear in ancestral forms, Comparative Anatomy: Vestigial structures that are reduced in form or function, Penguins have non-flight wings, and parrots have wings for flight, Homologous structures are anatomically similar structures inherited from a common ancestor, Bird wings and reptile forelimbs are similar in structure, but different in function, Analogous structures are used for the same purpose, but have different structures, Bird wings and insect wings have the same function, but different structure, Comparative Embryology: An embryo is an early, pre-birth stage of an organism’s development, Vertebrate embryos exhibit homologous structures during certain phases of development, All vertebrate embryos have tails and pharyngeal pouches, Comparative Biochemistry: Different species share certain ancient amino acid sequences, Different species share certain DNA and RNA sequences, Organisms with closely related morphological features have more closely related molecular features,

Evidence of Evolution

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