Online Courses @ University of Phoenix - Opinions?

[Silly_Me]

It looks like I can take courses at the University of Phoenix for $250 per credit hour (military dependent rate).  They have an upper-level genetics course that would kill two birds w/ one stone for my BA in Biology, as genetics is a requirement for my degree *and* I need all the upper-level credits I can get.  

The genetics course is 5-weeks long & that alone sounds amazing to me.  I'm not sure if it's a test-heavy course or if it requires lots of research papers instead (which I would prefer), but I'm curious to know if anyone has taken online courses through the University of Phoenix.

Are there any con's that I'm not aware of?  

Thanks, guys!