First, resume

Hi Wynnshang, perhaps and hopefully I can help shed some light.

I graduated from UCSD in 2007 with a Biology major. I was hoping to get into research but found it unappealing after a few quarters. I stuck it out with bio and graduated. After college, I've decided to go into business, not that I know much about it. However, after getting into the Operations side of things, I learned that I may really like this business-related thing a lot. The thing that I want to say is that business schools look for all sorts of people. It doesn't matter what you have as undergrad, business schools care about what you do afterwards and what impact you make in your job and in your community. My honest opinion is that if you don't have any sorts of business/economics related material, you just have to convince the peeps at Morgan Stanley that you're willing to put in the work - this is my guess as I'm no financial analyst.

Since you may want to go into Marketing, you'd really need to get some experience in Marketing prior to business school; otherwise, recruits would treat you like you've got no experience and ultimately defeat the purpose of attending business school. Since you don't have much experience in business, you should really try your best to look for a job in the business field. I understand the importance of gaining admissions to big companies, such as Morgan Stanley or McKinsey, but when I started in business I wanted to be realistic with myself and really gauge at my chances of getting into these companies. I, too, had no real business background in college, except for the economics GE course and calculus series. As of right now, if I were you I'd focus on getting a job in whatever business field you can and just gain that experience. As long as you make that impact and do your due diligence, a good business school will accept you. You can also look into Healthcare-related field (prior to MBA or even after MBA), which means you'll have the upper-hand when compared with econ majors. Just be true to yourself on your resume when you're applying for that job at Morgan-Stanley, or when you're applying for b-school.

If you want, you can always private message me here and I'll be more than happy to share my thoughts with you. As I've said, I'm going through the same process as you are, and I've done plenty of research on business schools.