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DNA Evolution and Colonization Sequence of Island Lizards in Relation to Geological History: Mtdna Rflp, Cytochrome B, Cytochrome Oxidase, 12s RRNA Sequence, and Nuclear Rapd Analysis

Roger S. Thorpe, Duncan P. McGregor, Alastair M. Cumming and William C. Jordan
Evolution
Vol. 48, No. 2 (Apr., 1994), pp. 230-240
DOI: 10.2307/2410090
Stable URL: http://www.jstor.org/stable/2410090
Page Count: 11
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
DNA Evolution and Colonization Sequence of Island Lizards in Relation to Geological History: Mtdna Rflp, Cytochrome B, Cytochrome Oxidase, 12s RRNA Sequence, and Nuclear Rapd Analysis
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Abstract

A novel source of nuclear DNA information from random amplified polymorphisms (RAPD) and a wide-range mitochondrial DNA information (cytochrome b, cytochrome oxidase, and 12s rRNA sequence, RFLP from 4-base and 6-base recognition endonucleases) are used to reconstruct the population phylogeny of the western Canary Island lizard, Gallotia galloti, which, for geological reasons, has been subject to dispersal but not vicariance. Interpretation of DNA phylogenies in terms of colonization sequence indicates that G. galloti arose in Tenerife and dispersed westward in two independent pathways: north from north Tenerife to La Palma, and south from south Tenerife to Gomera to Hierro. The direction and timing of colonization by DNA divergence is entirely compatible with geological time and sequence of island origin.

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