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Relationships between the duplicated antifreeze protein genes in Fragilariopsis curta and Fragilariopsis cylindrus.
Notes: The numbers show the branches that were found to be under episodic diversifying selection. See Table 2 for the strength of positive selection (ω+) on each of the affected branches and for the proportion of the total branch length (q+) influenced by this selective regime. The scale bar shows the expected number of substitutions per nucleotide.
