Figure 2
From: Seeking gene relationships in gene expression data using support vector machine regression
Highly correlated expressions show similar linkage analysis results but may not be biologically related. Expression data from groups A and B are highly correlated and they all belong to the same biological group, ribosomal proteins. A1 and A2 are from the same gene, RPL12. Correlation coefficients for expression of genes C1 and C2 are > 0.987, but they appear to share no direct biological relationship, even though their NPL LOD score distributions show high similarity as well.