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Fig. 2 | BMC Biology

Fig. 2

From: The gold-ringed octopus (Amphioctopus fangsiao) genome and cerebral single-nucleus transcriptomes provide insights into the evolution of karyotype and neural novelties

Fig. 2

Genomic organization of the octopod expanded genes. a Chromosomal organizations of the protocadherin genes in A. fangsiao (top) and O. sinensis (bottom). b Synteny analyses between the octopod PCDH-clustered chromosomes (that is chromosome 13 in A. fangsiao and chromosome 14 in O. sinensis) and chromosomes of other species. Synteny blocks between pairwise species are labeled in colors: red for octopod (A. fangsiao, af; O. sinensis, os) and E. scolopes (es) comparison; blue for octopod (A. fangsiao, af; O. sinensis, os) and N. pompilius comparison; brown for A. fangsiao and O. sinensis comparison. The picture is plotted in R platform v4.1.2. c Comparison of the synteny blocks between the octopod PCDH-clustered chromosomes (that is Chr 13 for A. fangsiao, and Chr 14 for O. sinensis) and chromosomes of other species. The inner colored blocks represent synteny blocks between pairwise species, and the arch length represents the length of synteny block in individual species. The outer segments are chromosomes of each species: blue for A. fangsiao; yellow for O. sinensis; red for E. scolopes; black for M. yessoensis; gray for N. pompilius. The outer segments are only used for comparison of synteny block length and number, without chromosomal meaning. The picture is plotted using Circos v0.69 [29]. d The collinear modes between the gene families in octopus: PCDH and c2h2 zinc finger (C2H2 ZNF) on chromosome 13 of A. fangsiao and chromosome 14 of O. sinensis; C2H2 ZNF and G protein-coupled receptors (GPCR) on chromosome 25 of A. fangsiao and chromosome 27 of O. sinensis

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BMC Biology

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