This is not a judgment on you. It sounds like you really challenged yourself, and may have done well in such a program. This is just an explanation of how admi

This is not a judgment on you. It sounds like you really challenged yourself, and may have done well in such a program. This is just an explanation of how admissions offices work: Bio programs of any flavor at most halfway decent schools are so over-subscribed that there are far more people who exceed the minimum requirements than there are spots for them. Admissions offices have very limited resources to review enormous #'s of applications. 3.0 is a pretty good low-pass filter that eliminates a lot of those applications while still retaining applications from students who, from a probability standpoint, are most likely to succeed in the programs. Extra curriculars & volunteer work at labs show that you're willing to work hard, but not the quality of that work, so those become distinguishing factors only for students that already jumped the GPA hurdle. Academic success from someone with < 3.0 GPA would represent an outlier, and there are no good ways identify who those outliers are, and finding them isn't important when there are plenty of qualified applicants who are easier to identify. There's probably lots of students in your boat who would have contributed well to the body of scientific knowledge. But for every one of them-- and I have literally seen these students-- there are dozens upon dozens that are let into more lenient programs, unable to do the work & burdened with $100k+ in debt & nothing to show for it.