Internal correspondence analysis of tissue-specific genes in rice.

<p>The global codon usage variability was decomposed into within-block and between-block variability, consisting of the amino acid usage (between-AA) variability (<i>b</i>, <i>e</i>, <i>h</i>), synonymous codon usage (within-AA) variability (<i>a</i>, <i>d</i>, <i>g</i>), and variability of between- (<i>d</i>, <i>e</i>, <i>f</i>) or within tissues (<i>a</i>, <i>b</i>, <i>c</i>). The decomposition of global variability yields nine elementary analyses (<i>a</i>-<i>i</i>). In each peculiar analysis, the contribution to the total variance is indicated, where only the first 10 eigenvalues are represented to allow for a direct visual comparison.