[bromidewind]

I'm working on a take-home midterm for comparative anatomy and can't quite comprehend this one question.

Construct a functional homology of the 12 cranial nerves in the shark, mudpuppy, and mammal using data provided.

I can make sense of the data and determine what features are in common/distinct, but I'm not sure as to what a "functional homology" looks like. We don't have a textbook for the class and the internet hasn't helped too much. We're on break at the moment, so I can't get ahold of the professor. My best conclusion is that it's supposed to be a phylogenetic tree of sorts, comparing the functions of the nerves of the three organisms?

Yes this is a chemistry forum. But I'm sure there's somebody on here who's a chem/bio major or something. Thanks in advance