Mitochondrial cytochrome B DNA variation in the high-fecundity atlantic cod: trans-atlantic clines and shallow gene genealogy.

Abstract excerpt

An analysis of sequence variation of 250 bp of the mitochondrial cytochrome b gene of 1278 Atlantic cod Gadus morhua ranging from Newfoundland to the Baltic shows four high-frequency (>8%) haplotypes and a number of rare and singleton haplotypes. Variation is primarily synonymous mutations. Natural selection acting directly on these variants is either absent or very weak. Common haplotypes show regular...

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