<strong>Colouring above a percentage identity threshold</strong>
</p>
<p>Selecting this option causes the colour scheme to be applied to
- only those residues that occur in that column more than a certain
+ only those residues that occur in that column at least a certain
percentage of the time. For instance, selecting the threshold to be
- 100 will only colour those columns with 100% identity.</p>
- <p>To be coloured, a residue must match the consensus (most commonly occurring) residue for the column (or joint equal consensus).</p>
+ 100 will only colour those columns with 100% identity, and selecting 50 will shade residues appearing in least 50% of the rows (or sequences) in each column.</p>
<p>The percentage calculation may include or exclude gaps in the column, depending on the option selected for the <a href="../calculations/consensus.html">consensus calculation</a>.</p>
- <p>With a threshold of 0, colouring is unchanged (including non-consensus residues).</p>
+ <p>With a threshold of 0, colouring is unchanged.</p>
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