1 </span></span>
<span><span class="co">## attr(,"add_ind")</span></span>
<span><span class="co">## [1] TRUE</span></span>
<span><span class="co">## attr(,"h2")</span></span>
<span><span class="co">## [1] 0.5</span></span></code></pre>
<p>With only a mother and a father</p>
<div class="sourceCode" id="cb10"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span><span class="fu"><a href="../reference/construct_covmat.html">construct_covmat</a></span><span class="op">(</span>fam_vec <span class="