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Fig. 4 | BMC Genomics

Fig. 4

From: Determination of dosage compensation and comparison of gene expression in a triploid hybrid fish

Fig. 4

Partitioning of expression patterns in triploid. a. The 12 possible differential expression states in triploid. Roman numerals indicate the same categories that were used in Rappet et al. (2009) [32]. The respective gene expression patterns for the diploid parents and their triploid offspring are shown in the schematic graphs. b. GB expression levels (black spot in the dotted line) when paternal BSB (♂) has higher expression than maternal GC (♀). The significantly different expression levels in triploid that was lower than those in paternal BSB and higher than those in maternal GC show the mid-parents expression pattern (XI). If, however, the GB expression was not significantly different (threshold value of log2Ratio ≤ 1) from that of the parents (green spots), the ELD in the direction of paternal BSB or maternal GC can be explained by up- or downregulation of the BSB homoeolog (VII and IX). The significantly different expression levels in which triploid expression was higher than that of paternal BSB or maternal GC (red spot above the midpoint) or lower than that of paternal BSB or maternal GC (red spot below the midpoint) conformed to the upregulation (V) and downregulation (I) patterns, respectively. c. GB expression levels (black spot in the dotted line) if maternal GC (♀) has higher expression than paternal BSB (♂). d. GB expression levels (black spot in the dotted line) if the expression levels of paternal BSB or maternal GC were not significantly different

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