Analysis of Evidence Indicates That the Jaws of Gnathostomes Evolved

question 119

Multiple Choice

Analysis of evidence indicates that the jaws of gnathostomes evolved from

• A) skeletal arches used to support gills.
• B) small bones associated with the brain capsule.
• C) the bony teeth found in lamprey tongues.
• D) progressive widening of the cyclostome mouth.
• E) cartilaginous vertebrae.

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Definitions:

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