[Suppafly]

>We do not reject new biology majors because they had never touched a microscope before entering the program.

No but you'd presumably make them take some remedial classes that the mainstream students wouldn't be required to take. Or maybe not, I'm not sure how it works in biology, but in the harder STEM majors, you're generally expected to have some basic knowledge beyond what the 'easy' track at high school required for graduation.