"anchor" aria-label="anchor" href="#excessive-zeros"></a>
</h3>
<p>Submatrices composed entirely of zero values can also be problematic.
There may be good biological reasons for this phenomenon. Species that
do not reproduce clonally will have zero-value <strong>C</strong>
matrices. Another biologically reasonable explanation could be that in
the particular focal population in the particular focal year, there was
no sexual reproduction recorded, so the <strong>F</strong> matrix was
composed entirely of zero