What are the motifs in Mutation by Robin Cook?

Family relations is a recurring idea. In essence, the novel deals exclusively with a single family. Victor, Marsha and VJ Frank are the only detailed characters in the novel. David Frank and Janice Fay are somewhat developed characters and are also inside the family structure.

On a wider scale, Maurice Hobbs and Mark Murray are the biological children of Victor and Marsha Frank, as are the four developing fetuses and the Steinberger baby. Thus, Victor, Marsha, their nine sons, and their long-term live-in nanny compose the primary and many of the secondary characters in the novel.