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Article

Initial mutational steps toward loss of opsin gene function in cavefish.

Molecular biology and evolution - 1 Jul 1995

Yokoyama S, Meany A, Wilkens H, Yokoyama R

Abstract excerpt

The river-dwelling fishes of Astyanax fasciatus and their derivatives from Pachon and Micos caves in Mexico were collected. By comparing red (r007) and green (g103) opsin gene sequences from the three populations, we found a high frequency of C-->T changes in r007 and g103 of the eyed Micos fishes presumably due to spontaneous cytosine methylation or enzymatic deamination of the CG dinucleotide, and a deletion of...

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PMID: 7659009
DOI: 10.1093/oxfordjournals.molbev.a040233

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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