Chromosomal rearrangements in a Somali wild ass pedigree, Equus africanus somaliensis (Perissodactyla, Equidae)

被引：11

作者：

Houck, ML ^{[1
]}

Kumamoto, AT ^{[1
]}

Cabrera, RM ^{[1
]}

Benirschke, K ^{[1
]}

机构：

[1] Zool Soc San Diego, Ctr Reprod Endangered Species, San Diego, CA 92112 USA

来源：

CYTOGENETICS AND CELL GENETICS | 1998年 / 80卷 / 1-4期

关键词：

D O I：

10.1159/000014966

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

Chromosome analyses were conducted or, 15 animals in a pedigree of Somali wild ass, Equus africanus somaliensis. 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: E. asinus (domestic donkey), E. hemionus (onager), E, kiang (kiang), and E. burchelli (common zebra). Banding analyses also revealed a paracentric inversion polymorphism in submetacentric chromosome pair 2 off. a. somaliensis. 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.

引用

页码：117 / 122

页数：6

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