Figure 4From: Complete plastid genome sequences suggest strong selection for retention of photosynthetic genes in the parasitic plant genus CuscutaPairwise d N / d S of Nicotiana and Ipomoea vs. Panax ginseng for all shared protein-coding genes. Genes are ranked left to right by increasing d N /d S for Nicotiana. Genes lost in Cuscuta exaltata and C. obtusiflora are indicated below the graph.Back to article page