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Increased mitochondrial DNA diversity in ancient Columbia River basin Chinook salmon Oncorhynchus tshawytscha

Fig 2

Haplotype networks of ancient and contemporary groups, including Columbia sub-groups.

Orientation for haplotypes is constant between networks, circle size is proportional to frequency in the grouping, lines represent mutational connections. Four “evolutionary backbone” types as defined by Martin et al. [42]are labeled for reference in the network.

Fig 2

doi: https://doi.org/10.1371/journal.pone.0190059.g002