Figure 31.1
-Refer to Figure 31.1. Suppose new molecular analyses indicated that the phylum Annelida had diverged from the arthropod lineage after Onychophora and Tardigrada. What would this imply about protostome evolution?

Question

Quizplus · Accepted Answer

If Annelida diverged after Onychophora and Tardigrada, it would suggest that segmentation evolved once in the common ancestor of these groups (A). Additionally, since Annelida do not molt, it implies they gained and then lost this trait (B).

Figure 31.1 -Refer to Figure 31.1. Suppose New Molecular Analyses Indicated That