sex

tide polymorphism vs. family dinners. Neurotransmitters vs. sibling rivalries. Deoxyribonucleic acid vs. broken homes.
It's the age-old debate of nature vs. nurture. And the battle rages on.
In the wake of the horrifying death of six-year-old Kayla Rolland, who was shot point-blank by a fellow first-grader at her Michigan elementary school in early March, family, friends and people all across the country were left to wonder how a six-year-old boy could become a murderer. People usually speculate about what societal influences led him astray--but could it have been in his genes?
The nature of nurturing
After witnessing the detrimental effects of a bad neighborhood on his peers, junior Mark Nyles believes the evidence is more compelling on the side of environment than science. "The system affects everybody," says Nyles. "My friends [who live in New York] got into a lot of trouble, but they were all people who were good at heart and got drawn into the wrong crowd."
And unfortunat...