'>=</span> <span class='fu'>rTrait</span>(<span class='kw'>n</span><span class='kw'>=</span><span class='fl'>1</span>,<span class='kw'>phy</span><span class='kw'>=</span><span class='no'>phy</span>)
<span class='no'>x_sd</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/stats/Normal.html'>rnorm</a></span>(<span class='fl'>150</span>,<span class='kw'>mean</span> <span class='kw'>=</span> <span class='fl'>0.8</span>,<span class='kw'>sd</span><span class='kw'>=</span><span class='fl'