Figure 5.

Differential retention of gene duplicates in cognition, pigmentation and liver function classes in teleosts after the teleost genome duplication (TGD). (A) Retention rates for TGD duplicates of cognition, pigmentation, and liver genes in seven teleost genomes. Time points during teleost evolution that involve the lineage leading to Xiphophorus are connected by lines. (B) Phylogenetic mapping of gene losses for 190 pairs of cognition gene duplicates after the TGD. Losses are indicated with negative values. The number of retained TGD paralog pairs for each individual teleost genome is given in brackets. TGD paralog losses were mapped onto the teleost phylogeny provided by Setiamarga et al. ³⁹ following the parsimony principle. The TGD event was set to 350 million years ago. The retention rate of TGD paralogs is defined by the pairs of TGD duplicates present in a specific lineage divided by the number of pairs of TGD duplicates present at the time of the TGD ¹⁸