Book excerpt: These editors provide a stimulating survey of the ways in which mitochondria, plastids, and other cellular organelles replicate. The orderly division and segregation of these organelles is essential for the survival of all eukaryotes and is therefore a topic of importance to a wide range of biologists, from geneticists, via physiologists, to molecular biologists. The first part of the volume examines the mechanism, regulation, and consequences of organelle segregation and division as studied in plant and animal cells. The second part compares the replication of DNA in eukaryote organelles with bacterial processes. Reviews range from a comparative study of DNA polymerases to the possible mechanisms ensuring DNA segregation.