Also, explain the evolutionary changes that resulted in groups branching off from each other (e.g. jaws, limbs, etc.). What are the characteristics of all animals? Select all that apply. a. bilaterally symmetric b. blastula during ...
Lampreys also have a cartilaginous pipe surrounding the rodlike notochord. Both hagfishes and lampreys lack skeleton-supported jaws and paired appendages. Evolutionary Timeline A comparison of gnathostomes and agnathans shows that the brain and cranium evolved first in the vertebrate lineage. ...