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- Title
Chromosomal rearrangements in a Somali wild ass pedigree, <italic>Equus africanus somaliensis</italic> (Perissodactyla, Equidae).
- Authors
Houck, M.L.; Kumamoto, A.T.; Cabrera, R.M.; Benirschke, K.
- Abstract
Chromosome analyses were conducted on 15 animals in a pedigree of Somali wild ass, <italic>Equus africanus somaliensis</italic>. G- and C-banded karyotypes are presented for the first time on this endangered species. The diploid number ranged from 62 to 64. Numerical chromosomal variation was the result of a centric fission which was accompanied by a heterochromatic deletion. The fission polymorphism involved acrocentric elements 19 and 21 as determined by G-banding. These autosomes are homologous to those involved in centric fission/fusion polymorphisms in other equids: <italic>E. asinus</italic> (domestic donkey), <italic>E. hemionus</italic> (onager), <italic>E. kiang </italic>(kiang), and <italic>E. burchelli </italic>(common zebra). Banding analyses also revealed a paracentric inversion polymorphism in submetacentric chromosome pair 2 of <italic>E. a. somaliensis.</italic> Both the centric fission and paracentric inversion polymorphisms involved heterochromatic regions. One individual was found to be heterozygous for two de novo chromosomal rearrangements: a centric fission (involving acrocentric elements 19 and 21) and a heterochromatic deletion of chromosome 2.
- Publication
Cytogenetic & Genome Research, 1998, Vol 80, Issue 1-4, p117
- ISSN
1424-8581
- Publication type
Article
- DOI
10.1159/000014966