There's also a question of whether, once a person starts smoking, increased nicotine consumption causes certain genes to turn on or off.
My exact thoughts as I was reading this article. Thanks for sharing! Other than a genetic profile, nicotine may activate certain genes. I guess we'll have to take a closer look to the study to have an idea of which genes and their potential.
The predators give us their mind, which becomes our mind. The predators' mind is baroque, contradictory, morose, filled with the fear of being discovered any minute now. -Castaneda
For now we see in a mirror, dimly, but then face to face. Now I know in part, but then I shall know just as I also am known. And now abide faith, hope, love, these three; but the greatest of these is love. -1 Corinthians 13:1–13