Mutation patterns of mitochondrial H- and L-strand DNA in closely related Cyprinid fishes.

Abstract excerpt

Mitochondrial genome replication is asymmetric. Replication starts from the origin of heavy (H)-strand replication, displacing the parental H-strand as it proceeds along the molecule. The H-strand remains single stranded until light (L)-strand replication is initiated from a second origin of replication. It has been suggested that single-stranded H-strand DNA is more sensitive to mutational damage, giving rise to...

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