<p>If you plan on law school or other professional school, it doesn’t matter. If you plan on graduate school, or looking for jobs (though decent jobs are scarce for a biology major to begin with), go with the BS. If you’re not sure, go with the BS. Unless it’s a school that only offers a BA in a field of science, always go with the BS. A BS in biology will shut fewer doors than a BA in biology.</p>