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Home Q & A Board Biology-Related Homework Help Zoology and Botany (Moderator: ehd123)
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mikael mikael
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10 years ago
Among vertebrates, the unique feature of lampreys and hagfish is the ______.
A)  presence of a cartilaginous skeleton
B)  absence of a backbone
C) absence of jaws
D)  absence of a post-anal tail
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kodekode
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10 years ago
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AndyHe,  Eclip

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mikael Author
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10 years ago
Thanks again, really helps put things in perspective.
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10 years ago
My pleasure.
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