| molecular phylogenetics of the avian genus pipilo and a biogeographic argument for taxonomic uncertainty. | we sequenced 1709 base pairs (bp) of mitochondrial dna including parts of cytochrome b, nd 2, and the control region (cr i, ii) for seven members of the avian genus pipilo (towhees), melozone kieneri (rusty-crowned ground-sparrow), and arremonops rufivirgatus (olive sparrow). a total of 457 bp was variable and 257 bp were potentially phylogenetically informative. all gene regions were similarly variable (20.2 to 28.4%) except for cr ii (38.4%); third position transitions were as common as substi ... | 1998 | 9878230 |