xtAlign":"center","digits":2,"position":{"bottom":10,"left":10}}}},"evals":[],"jsHooks":[]}</script>
</div>
<div id="most-recent-common-ancestor" class="section level2">
<h2 class="hasAnchor">
<a href="#most-recent-common-ancestor" class="anchor"></a>Most Recent Common Ancestor</h2>
<p>Highlight the most recent common ancestor (MRCA).</p>
<div class="sourceCode"><pre class="sourceCode r"><code class="sourceCode r"><span class="co"># add internal nodenames</span>
birds  &lt;-<span class="st"> </span><span cl