Figure 2

Phylogenetic relationship of nuclear receptors in Daphnia pulex, Drosophila melanogaster, Caenorhabditis elegans and Homo sapiens. The nuclear receptors from four different species were subjected to phylogenetic comparisons using Bayesian Inference, Maximum Parsimony, and Neighbor-Joining methods. The Bayesian tree is shown with posterior probabilities from the Bayesian tree, and bootstrap support values (frequency of occurrence) from the Maximum Parsimony and Neighbor-Joining trees provided in order from left to right, respectively. Probability values are separated by forward slashes at each corresponding node; an X indicates an area of disagreement from the Bayesian tree. Notations Dp, Dm, Hp, and Ce in association with receptor names denote sequences from D. pulex, D. melanogaster, H. sapiens, and C. elegans, respectively. Numbers at nodes are posterior probabilities. All D. pulex sequences are in red. Figure 3 is also available in an expandable pdf format in Additional File 3