31. Invertebrates
Ecdysozoans
0:58 minutes
Problem 21
Textbook Question
Textbook QuestionSCIENTIFIC THINKING In one of the experiments described in researchers tested the hypothesis that the highly successful arthropod body plan resulted from new genes that originated in the arthropod lineage. Draw a diagram showing the evolutionary relationship between arthropods and velvet worms and use it to explain why velvet worms were a good choice to test this hypothesis. What results would have supported the hypothesis?
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