Phylogenetic relationships between Micropia retroelements. Phylogeny of Micropia sequences of genus Zaprionus (green squares) and the melanogaster (red circles) and repleta (blue triangles) groups. The trees were reconstructed using the maximum-likelihood method (HKY85 distance), as implemented in the PhyML program. Numbers in squares indicate the clade number mentioned in the text. The branch support was calculated using bootstrap test (1000 replications). Numbers next to species names indicate the clone or genomic sequence identification.