Some researchers claim that sponge genomes have homeotic genes, but no Hox genes. If true, this finding would _____.
A) mean that sponges must no longer be classified as animals.
B) mean that extinct sponges must have been the last common ancestor of animals and fungi.
C) confirm the identity of sponges as "basal animals."
D) strengthen sponges' evolutionary ties to the Eumetazoa.
E) require sponges to be reclassified as choanoflagellates.
Answer: C) confirm the identity of sponges as "basal animals."
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