Figure 8From: The process of genome shrinkage in the obligate symbiont Buchnera aphidicolaLengths of intergenic spacers in Buchnera relative to number of genes deleted from the corresponding position within syntenic fragments. Five spacers that included remnants of recognizable pseudogenes (ψ) are indicated. The dotted line indicates the average length of spacers at sites where no genes have been eliminated (mean = 55 nucleotides, N = 272).Back to article page