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7 April, 15:13

What is a trait that is ancestral to all chordates? A. a jaw bone B. a notochord C. an amniotic egg D. a vertebral column

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  1. 7 April, 17:04
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    B. a notochord

    Chordates are a phylum in the animal kingdom which have the following characteristics

    Pharyngeal gill slit

    dorsal nerve

    notochord

    post anal tail

    These organisms possess these ancestral traits which have evolved to a more complex and sophisticated features that most animals have today.
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