Banded Karyotypes of Peromyscus sitkensis from Baranof Island, Alaska

The authors present G- and C-banded karyotypes of Peromyscus sitkensis from the type locality of the species-Sitka, Baranof Island, Alaska (Merriam, 1897). The diploid number was 48. All chromosomes except pairs 4, 6, and 7 were biarmed in all specimens. Chromosome 4 is polymorphic for the presence...

Full description

Saved in:
Bibliographic Details
Published in:Journal of mammalogy 1983-01, Vol.64 (4), p.682-685
Main Authors: Pengilly, Douglas, Jarrell, Gordon H., MacDonald, Stephen O.
Format: Article
Language:English
Subjects:
Acrocentric chromosomes
Aves
Biological and medical sciences
Biological taxonomies
Chromosomes
Evolution
Fundamental and applied biological sciences. Psychology
General Notes
Genetic variation
Heterochromatin
Karyotype
Mice
Pericentric inversion
Peromyscus sitkensis
Sex chromosomes
Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The authors present G- and C-banded karyotypes of Peromyscus sitkensis from the type locality of the species-Sitka, Baranof Island, Alaska (Merriam, 1897). The diploid number was 48. All chromosomes except pairs 4, 6, and 7 were biarmed in all specimens. Chromosome 4 is polymorphic for the presence of short heterochromatic arms. Chromosomes 6 and 7 carry floating pericentric inversions. Heterochromatin is restricted to the centromeric region in eleven autosomes (pairs 1, 2, 3, 5, 7, 9, 10, 13, 14, 20, and 23), but in six biarmed autosomes (pairs 8, 12, 15, 16, 17, and 21) heterochromatin constitutes most of one arm. Heterochromatin is also present as an interstitial band in pair 6, as telomeric segments in one arm of pairs 11 and 18, and as a paracentromeric segment in one arm of pair 22. One arm of chromosome 19 shows a segmented C-band pattern.
ISSN:0022-2372
1545-1542
1545-1542
0022-2372
DOI:10.2307/1380525