Bio1100 Chapter 20 History of the Vertebrates
  1. Vertebrates possess vertebrae   and evolved from an ancestor that had a notochord  .
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  2. Important evolutionary adaptations in fish include legs   and jaws.
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  3. Terrestrial vertebrates develop from amniotic   eggs that can be laid on dry land.
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  4. Mammals produce milk   to nourish their young.
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