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Acta zoológica mexicana

On-line version ISSN 2448-8445Print version ISSN 0065-1737

Abstract

GUEVARA-CHUMACERO, Luis Manuel; LOPEZ-WILCHIS, Ricardo; PEDROCHE, Francisco F.  and  BARRIGA-SOSA, Irene de los Angeles. Análisis estructural del gen mitocondrial citocromo b y de la región control de Cynomys mexicanus y Spermophilus spilosoma (Rodentia: Sciuridae). Acta Zool. Mex [online]. 2006, vol.22, n.1, pp.123-125. ISSN 2448-8445.

The nucleotide sequences of the cytochrome b gene and of the control region are described for Cynomys mexicanus and Spermophilus spilosoma. The cytochrome b gene was characterized by the presence of eight non-synonymous substitutions at the inter-generic level, presented mainly in the transmembrane zone (87%). The control region was characterized by the presence of the conserved blocks, ETAS1 and CSB1; by the absence of repetitive sequences and by the conserved blocks, ETAS2, CSB2 and CSB3. Most of the inter-generic variation (47.9%) was observed in the ETAS domain. The structure of the control region was similar to that of phylogenetic related species.

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