<i>net</i></b> average distances between <u style="text-underline: double; 
														 text-decoration: none; ">groups 
 of <a href="javascript:TextPopup(this)" id="HotSpot19494" class="glossterm">taxa</a><script type="text/javascript">//<![CDATA[
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//]]></script><span class="glosstext" id="POPUP19494" style="display: none;"> A taxon is the individual unit whose evolutionary relationship is being investigated.  Depending on the study, “taxa” may refer to sp