Skip to main content
Fig. 1 | BMC Biology

Fig. 1

From: Symmetric subgenomes and balanced homoeolog expression stabilize the establishment of allopolyploidy in cyprinid fish

Fig. 1

Two rounds of allopolyploidization and subgenome determination. A Simulated topologies of phylogeny reflecting the origin of goldfish, common carp, and their allotetraploid progenies. Polyploidization occurring in F3 individuals gave rise to the allotetraploid lineage of goldfish and common carp [7, 23]. The width of the lines represents the genome size of the species. The maternal ancestor (yellow) and paternal ancestor (green) of goldfish, common carp, and golden-line barbel (Sinocyclocheilus grahami) existed for a short time span (T1) relative to the divergence time between goldfish and common carp (T2). One strong (red, originating from goldfish) and one weak (white, originating from common carp) signal were detected in the intergeneric F1 using fluorescence in situ hybridization, while two strong (red) and two weak (white) signals were observed in allotetraploid F22 and F24 (Scale bar: 3 cm) [24]. B Genome synteny of goldfish, common carp, and their allotetraploid progenies. Blocks represent the assembled chromosomes of subgenome R (red) and subgenome C (blue) in the allotetraploid, subgenome M in goldfish and subgenome B in common carp (yellow river carp) (originating in the maternal ancestor, yellow), and subgenome P in goldfish and subgenome A in common carp (originating in the paternal ancestor, green). The red line represents the three interchromosomal translocations between the inbred parents and the corresponding subgenome of the assembled genome

Back to article page