<p>out of biological sciences, genetics, and cell bio and neuro. which is the most difficult?</p>
<p>probably cell bio and neuro</p>
<p>I'd say they're all pretty equal. So much of it depends on whether or not you like neuroscience more than genetics(or vise versa). If you want an easy major, choose psychology. If you like biology in general, pick which segment you enjoy most and choose that one.</p>