Epigenetics, science fiction, and scientific fact

terrarium eco system

…he also said that chemical signals between organisms can change genetic expression. This allows the social environment to modify gene expression in individuals and in their offspring.

Human pheromones work by effecting hormones that affect behavior


Copulins are olfactory/pheromonal stimuli from women (human pheromones) that appear to condition increased testosterone and sexual arousal in men.