<p>Here’s a little more info on the origin of life sciences PhDs, which is what the OP is interested in. Top schools on a per capita basis are:</p>
<ol>
<li>CalTech</li>
<li>Reed</li>
<li>Swarthmore</li>
<li>Harvey Mudd</li>
<li>U. Chicago</li>
<li>MIT</li>
<li>Kalamazoo</li>
<li>Carleton</li>
<li>Haverford</li>
<li>Grinnell</li>
</ol>