I’m not sure there’s a single worst path, but a general biology degree is pretty worthless without an advanced degree. I’ve known a couple of people with that degree that have ended up working at the Gap.
But that’s true of many fields of study: a generalized bachelor’s degree isn’t of much value in many cases. For some (engineering, education, graphic design) you can hit the ground running with a bachelor’s.
But for others it’s an expensive admission ticket to grad school or low-level employment.