An assessment of the relationships among species of Camelidae by satellite DNA comparisons.
Hereditas
; 121(3): 283-90, 1994.
Article
em En
| MEDLINE
| ID: mdl-7737889
Tandem satellite arrays and interspersed repetitive DNA components of the New World camelids guanaco, llama, alpaca, and vicuña and the Old World bactrian camel have been identified and compared. Southern hybridizations, using camel restriction fragments as probes, indicated that satellite DNAs in all camelids examined have been conserved since the last common ancestor about 5-10 MY ago. The hybridization profiles, however, varied from totally identical (MspI-sat) to highly differentiated (PstI-sat and EcoRI-sat) between Old and New World species. Repetitive DNA patterns specific of South American camelids were identified by most of the vicuña and guanaco probes and (a) llama and guanaco have undifferentiable patterns, supporting the view that the former is a domesticated form of the latter; (b) vicuña patterns were species-specific and in agreement with its position in a separate taxonomic unit; (c) the presence in alpaca of BamHI, TaqI and EcoRI patterns that are intermediate between those of the species above, suggested that the origin of the alpaca may be found in a cross-breed between the guanaco and vicuña.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
DNA Satélite
/
Camelídeos Americanos
Limite:
Animals
Idioma:
En
Revista:
Hereditas
Ano de publicação:
1994
Tipo de documento:
Article
País de afiliação:
Argentina
País de publicação:
Reino Unido