Genetics / Polymorphism / Taxonomy / Peru / Phylogeny / Maximum Likelihood / Animals / South America / Chagas disease / North America / Trypanosoma Cruzi / North American / Maximum Parsimony / Ribosomal DNA / Genetic distance / Nucleotides / Molecular Sequence Data / Maximum Likelihood / Animals / South America / Chagas disease / North America / Trypanosoma Cruzi / North American / Maximum Parsimony / Ribosomal DNA / Genetic distance / Nucleotides / Molecular Sequence Data