Fig. 3From: The complete mitochondrial genome of Taxus cuspidata (Taxaceae): eight protein-coding genes have transferred to the nuclear genomeComparison of mitochondrial introns among the studied plants. The arrowhead indicates the position of an intron insertion. Solid and hollow triangles represent cis- and trans-spliced introns, respectively. The asterisk indicates that the intron was acquired before the divergence of nonvascular and vascular plantsBack to article page