Figure 2

Mammalian SAMD9 and SAMD9L genes estimated Maximum Likelihood tree. For the mammalian SAMD9 and SAMD9L genes alignment and after GARD analysis [13, 14], a significant recombination breakpoint was detected (nucleotide position 4755) defining a left and a right segment. A phylogenetic tree was estimated for each segment using the Maximum Likelihood (ML) method. However, the resulting tree from the right segment presented weakly supported nodes and was discarded. On the other hand, the left segment with 4755 nucleotides was used to reconstruct a ML phylogenetic tree under the GTR+I+G nucleotide substitution model. The analyses were performed with 1,000,000 generations and 1,000 bootstrap searches. The bootstrap values are indicated on the branches. The abbreviations correspond to the following species common names: Aime - Giant panda; Bota - Cow; Caja - Common marmoset; Calu - Domestic dog; Capo - Domestic Guinea pig; Crgr - Chinese hamster; Eqca - Horse; Ereu - West European hedgehog; Gogo - Western gorilla; Hosa - Human; Loaf - African bush elephant; Mamu - Rhesus monkey; Modo - Grey short-tailed opossum; Mumu - House mouse; Mylu - Little brown myotis; Nole - Northern white-cheeked gibbon; Orcu - European rabbit; Patr - Common chimpanzee; Poab - Sumatran orangutan; Rano - Brown rat; Soar - Common shrew ; Susc - Pig. To access the species scientific names, the list of abbreviations should be consulted.