Different fusion configurations of evolutionarily conserved segments in karyotypes of Potamochoerus porcus and Phacochoerus africanus.
The karyotype of the red river hog Potamochoerus porcus (2n = 34) differs from that of the domestic pig by the presence of 2 fusion chromosomes homologous to pig chromosomes 13/16 and 15/17. Moreover, chromosomes corresponding to pig chromosomes 13/16 and 1 are both acrocentric. Hybridization with region-specific painting probes confirmed tandem fusion of pig chromosomes 13 and 16, and a pericentric inversion of the pig chromosome 1p equivalent in P. porcus. The chromosome complement of the wart hog Phacochoerus africanus (2n = 34) differs from the pig karyotype in 2 centric fusions, 13/16 and 15/17. Karyotypic relationships among different Suidae species are discussed in the article. Besides fusions 13/16 and 15/17, which are common to several suids, another fusion of pig chromosomes 14 and 18 is suggested to exist in the karyotype of Sus cebifrons.
Musilova
P
P
Department of Genetics and Reproduction, Veterinary Research Institute, Brno, Czech Republic. musilova @ vri.cz
Kubickova
S
S
Hornak
M
M
Cernohorska
H
H
Vahala
J
J
Rubes
J
J
D000818:Animals; D033481:Chromosomes, Mammalian; D019143:Evolution, Molecular; D050939:Gene Fusion; D007621:Karyotyping; D013552:Swine / Q000235:genetics*