Spelling love with an X : a mother, a son, and the gene that binds them / Clare Dunsford.

Pt. 1. The fragile site
Anticipation: Once upon a time
Hairpin turns: doctors and divorce
Linkage: family ties
Pt. 2. Hotspots
Replication fork: motherhood
Base pairs: like mother, like son
Transcription and translation: speaking of love
Repeats: obsessions
Saltation: coming up for air
Mutants and wild types: you and me against the world
Vectors: what lies ahead.