Book-loving parents fill the home with books and raise a keen reader. This is:

1. Gene-environment correlation is when exposure to environments depends on genotype. 2. In the passive kind, the genes a child inherits go with the home that parents, shaped by their own genes, create. 3. Evocative means the child's own behaviour draws a response, and active means the child selects the setting. _Source: Wikipedia, "Gene–environment correlation" (rev 1300059523), section "Definition"_