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Hierarchical clustering of replicates based on expression profiles using the R statistical package. Genes are organized vertically based on expression in W23 ES sample 1. (A) Clustering based on FGS gene expression FPKM except for genes with 0 FPKM in all 18 samples. (B) Same as in (A) except that genes having 0 FPKM in all six W23 ES and Ov samples but having reads above 0 in the B73 ES or Ov samples were also omitted to remove possible artifacts caused by read mapping difficulties.
