What can you do with a major in molecular biology?
I majored in biochemistry and molecular biology for my undergraduate major. After graduating, I was a technician at a large pharmaceutical company. From there, I went into drug development and currently oversee clinical trials. If you want to do research and be in the lab, you may need a higher degree. But with just a bachelors degree, there are still many options in the biotech and pharmaceutical industries.
A bachelors degree probably won't be good enough for an upwardly mobile career, so start thinking about graduate school and a thesis subject early.