Skip to main content
Figure 2 | Human Genomics

Figure 2

From: Update on the olfactory receptor (OR) gene superfamily

Figure 2

A phylogenetic analysis of platypus, opossum and human OR genes for the new family 14 only. Opossum = black for intact genes, grey for pseudogenes. Platypus = red for intact genes, pink for pseudogenes. Human = blue. ORI4 is an expansion of three ancestral OR gene subfamilies (A, B and C); the expansion, in both platypus and opossum, took place after speciation, whereas only one branch shows an orthologous relationship between platypus and human (marked with *). The tree was generated with MEGA4, using the nearest-neighbour-joining algorithm, and distances with the Poisson correction model. Bootstrap units are also indicated [34]. This tree is grounded with the OR5IEI gene. Only genes with no more than two frame disruptions were considered in the analysis.

Back to article page