<p>I often see the word <strong>depth</strong> in the manuals of the tools for NGS, what is its meaning  ?</p>

<p>thanks.</p>

<p>It's also worth noting that you can use read depth to infer copy number, given a sufficient number of reads.  On average, you'll get 1.5x more reads from a triploid region than you will from the rest of the diploid genome.</p>
