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10 Cards in this Set
- Front
- Back
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Life started how long ago
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3.8 billion years ago
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What ultimately is evolution
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Gene distribution changes of time
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Evolution facts
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Fossils
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Fossils
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Fossils were studied early 1820s
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Dorudon
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Whale type fossil with a pelvis bone
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Rodhocetus
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Whale type fossil with pelvis and legs (pelvis not fused). Ankle bones like pigs
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Homologous Structures
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Animals have similar structures (arm, forearm, wrist, fingers)
Genetically similar - our DNA is simular |
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Bio-geography / speciation
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Similar animals are found close to each other in the world. Evolutionary change is influenced by geographical changes
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When did Australia become island
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30 million years
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Natural selection example misquitos
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DDT when first introduces killed 90% mosquitos, those that lived, reproduced, passed on there genetic resistance. later, DDT kills 50% mosquito.
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