Extended Data Fig. 5: Emergence of gnathostome karyotypes via 2R. | Nature Ecology & Evolution

Extended Data Fig. 5: Emergence of gnathostome karyotypes via 2R.

From: Hagfish genome elucidates vertebrate whole-genome duplication events and their evolutionary consequences

Extended Data Fig. 5

a, Chromosomal level phylogenetic trees demonstrate the occurrence of 2R WGD. The two rounds of WGD are color-coded. Cyan and red denote genes encoded by corresponding chicken chromosomes and gar LOCs, respectively. Bootstrap support and posterior probability values of three methods are marked on branches: bootstrap value from RAxML-ng/bootstrap value from IQ-Tree/posterior probability from Astral-III. b, Evolution of gnathostome karyotype through 1R and 2R, with post-1R/pre-2R chromosomal fusions indicated with red lines, and ratios of gene retention asymmetries shown for directly ohnologous chromosomes after 1R and 2R. The size of each ancestral chromosome is proportional to the number of retained genes from ACs.

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