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Evidence for Evolution

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Presentation on theme: "Evidence for Evolution"— Presentation transcript:

1 Evidence for Evolution
7A Analyze and evaluate how evidence of common ancestry among groups is provided by the fossil record, biogeography, and homologies, including anatomical, molecular, and developmental.

2 Common Ancestry

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4 Fossils

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6 Newest or youngest fossils
Fossil Record Newest or youngest fossils Oldest fossils

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8 Biogeography

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10 Homologous Structures

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12 Vestigial Structures

13 Molecular Homologies

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15 Developmental Homology

16 Phylogenetic Tree

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19 Cladogram

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22 Common Ancestry Group of related species all come from (with some differences) the same ancestor Ex: tigers and lions came from saber tooth cat

23 Fossils Preserved remains of ancient organisms Ex: dinosaur fossils

24 Fossil Record How species have evolved from their ancestors
Ex: horse fossil record

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26 Biogeography Study or where species now live and where they & their ancestors used to live

27 Homologous Structures
Structures that show similarities between groups or organisms

28 Vestigial organs Structures that still exist in animal but no longer have any use Ex: Hind leg bones on whales Ex: Caudal vertebrae in humans (tail)

29 Molecular Homologies Comparing DNA & protein structures

30 Developmental Homology
Comparing similar structures during development of embryos

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