Figure 2

Evolutionary relationships among vertebrate α-like globin genes using a 50% majority rule consensus phylogram from an analysis using Bayesian Inference. The tree was constructed using mixed models of evolution for each codon position (see methods) and estimated base frequencies in an unlinked analysis using MrBayes (v. 3.1.2). Numbers adjacent to branches refer to % posterior probabilities. GenBank accession numbers for sequences are: Virginian Opossum (Didelphis virginiana) ζ¹, ζ², α¹, α², θ [AC139599.2, AC148752.1]; Stripe-faced Dunnart (Sminthopsis macroura) α^D, α², θ [AC146781]; Brazilian Opossum (Monodelphis domestica) α [TI# 453585430]; Tammar wallaby (Macropus eugenii) θ [AY459590], α [AY459589]; ζ [AY789121], ζ' [AY789122]; Horse (Equus caballus) θ (ψ α) [Y00284], α¹ [M17902], ζ [X07051]; pig (Sus scrofa) α^D [AC145444]; cat (Felis catus) α^D [AC130194]; cow (Bos taurus) α^D [AC150547]; Goat (Capra hircus) α [J00043]; Human (Homo sapiens) α1 [V00491], θ [X06482], ζ [NM_005332]; mu/α^D chain [AY698022]; Mouse (Mus muscularis) α¹ [NM_008218], ζ [X62302]; Rabbit (Oryctolagus cuniculus)α [X04751]; Eastern Quoll (Dasyurus viverrinus) α [M14567]; Chicken (Gallus gallus) α^A, π, α^D [AF098919]; Duck (Cairina moschata) α^D [X01831]; Pigeon (Columba livia) α^D [AB001981]; Turtle (Geochelone nigra) α^D [SEG# AB1165195]; Zebrafish (Danio rerio) α¹ [NM_131257]; Salamander (Hynobius retardatus) larval α [AB034756]; Salamander (Pleurodeles waltlii) α [M13365]; Frog (Xenopus laevis) α I [X14259], larval (tadpole) α T5 [X02798]; Yellowtail (Seriola quinqueradiata) α^A [AB034639]; Salmon (Salmo salar) α [X97289]; Southern Puffer (Sphoeroides nephelus) α² [AY016023]; Platypus (Ornithorhynchus anatinus) ζ, ζ', α^D, α³, α², α¹ [AC203513].