Rapid evolution of horse satellite DNA.
Genomics
; 18(1): 113-7, 1993 Oct.
Article
en En
| MEDLINE
| ID: mdl-8276394
ABSTRACT
The major satellite of the horse genome consists of about 1 million copies of a 221-bp tandem repeat unit. By fluorescence in situ hybridization it has been localized in the centromeres of 58 of the 64 horse chromosomes. The donkey genome contains a similar but not identical satellite. Strikingly, the equine repeat did not hybridize to DNA of the Grevy zebra, despite the divergence of the horse and zebra only 3 to 5 million years ago and the ability of these species to crossbreed. The evolution of satellite DNA in the Equidae is more rapid than that in other mammalian families, which may be explained by their rapid karyotypic evolution.
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Banco de datos:
MEDLINE
Asunto principal:
ADN Satélite
/
Evolución Biológica
/
Caballos
Límite:
Animals
Idioma:
En
Año:
1993
Tipo del documento:
Article