PEROMYSCUS

Proposed primitive condition

ONYCHOMYS
pirrensis
crinitus
boylii
merriami
eremicus
californicus
thomasi
attwateri
difficilis
ochraventer
nudipes
guatamalensis
gymnotis
mexicanus
yucatanicus
zarhynchus
pectoralis
perfulvus
melanophrys
truei
lepturus
alstoni
floridanus
gossypinus
leucopus
melanotis
polionotus
maniculatus
sitkensis
Arrangement of 30 species of Peromyscus and the genus Onychomys, derived from a cladistical analysis of chromosomal homology based on G- and C-banded chromosomes. Species are grouped based on the assumptions that shared chromosomal rearrangements became established in a common ancestor, and that the most parsimonious positioning of rearrangements would provide the most probable evolutionary tree for the 30 species. The primitive condition follows Greenbaum and Baker (1978) and Yates et al. (1979). (From Stangl and Baker, 1984)

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