Figure 11.16: The human mitochondrial genome, consisting of 16,569 bp, is highly economical in its organization. (a) The outer circle represents the heavy (H) strand, and the inner circle represents the light (L) strand. The origins of replication for the H and L strands are ori H and ori L, respectively. ND identifies genes that encode subunits of NADH dehydrogenase. (b) Electron micrograph of isolated mtDNA.
[Part b: CNRI/Photo Researchers.]