Some Researchers Claim That Sponge Genomes Have Homeotic Genes (Genes

question 91

Multiple Choice

Some researchers claim that sponge genomes have homeotic genes (genes that regulate development of anatomical structures) but no Hox genes (genes that regulate development of posterior-anterior axes and body segments) .If true,this finding would

• A)strengthen sponges' evolutionary ties to the Eumetazoa.
• B)mean that sponges must no longer be classified as animals.
• C)confirm the identity of sponges as basal animals.
• D)mean that extinct sponges must have been the last common ancestor of animals and fungi.
• E)require sponges to be reclassified as choanoflagellates.

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