However it will increase (likely) your GPA. And it will give you a leg up on other students who did not get early pre-college exposure to advanced coursework in terms of your ability to either start College taking more advanced classes or get better grades in classes you already took bur at a “lesser” college. Biochemical sciences advancement unlike math tends to become more siloed and more focused as you advance but not necessarily more abstract, difficult or conceptual. So, if you want a “top med school” generally adjudged by research funding or careers in academic medicine, taking a grad seminar lets say on gene editing while working in a CRISPR-cas lab may be a nice synergy that you are well prepared for and others aren’t.
And there’s no reason med schools will second guess why you took Bio again in your actual college years. “You wanted to learn the material well” and you’ll be joining legions pf premeds who took the AP class already with the same explanation for repeating. Or the many premed native spanish, russian or chinese speakers who take the intro language in college.
Please keep in mind the very strong anti-AP and anti-DE bias on this website. Academic ambition is generally painted as a fool’s errand or presumed personality negative here. Weird that since if you go to the “chance me” links the self-accelerated students seem to have some pf the strongest EC’s too.
Also please ignore absolute statements like “zero difference”. The difference will be what you make of it over the next 4 years. Sometimes it seems like commenters are here to safeguard some abstract notion of “fairness” and protect valuable academic resources from those who “game” the system. And doing extra learning counts as “gaming”. Every student and applicant is different, and students enter college with wildly different preparation and study skills; if you come into college strong, there’s a much higher likelihood you’ll exit strong.