A genus containing about 40 species of mice native to Central and North Amenca. The genetic data accumulated so far have been primarily related to the deermouse, P. maniculatus. More limited data exist for P. boylei, P. leucopus, and P. polionotus. Studies of biochemical variation and cytogenetics are presently the areas of most genetical research within the genus.
Subjects: Genetics and Genomics.