Resolution:
## Figure 4.
Correlations in transcription among five accessions during leaf and silique development.
(a) The Pearson correlation coefficient for a given sample was calculated with nRHI for
all the genes from each accession and the reference accession Col-0. Each bar represents
the correlation of a particular accession as compared to Col-0 in the sample group.
Note the common trend in reduction of the correlation during leaf and silique development
for each organ. (b) The regression coefficient for a given sample was calculated with nRHI for all the
genes from each accession (Y-values, regressor) and the reference accession Col-0 (X-values, predictor). Each bar represents the regression coefficient of a particular
accession as compared to Col-0 in the sample group. The regression coefficient (b) was calculated as b = (ΣX_{i}Y_{i }- (ΣX_{i})(ΣY_{i})/n)/(ΣX_{i}^{2 }- (ΣX_{i})^{2}/n), where n is the total number of genes in either Col-0 or the sample to be compared (7,508 in
this case). The error bar indicates the upper or lower limit of the 95% confidence
interval for each of the given regression coefficients. The 95% confidence interval
was calculated as b ± tα_{(2)}, _{(n-2)}Sb, where tα_{(2)}, _{(n-2) }is the t critical value at α = 0.05, two-tail, df = 7,506, and Sb is the standard deviation of b.
Chen |