A quiet girl with shoulder-long hair, she spends her time at home studying the nonhereditary mutations of the fruit fly.
And when he was five, the trouble was diagnosedchondrodystrophy, a rare form of nonhereditary dwarfism believed to be caused by a chemical imbalance during gestation.
So meager is man's understanding of the complicated biochemistry of evolution and of the nonhereditary influences of cultural environment that no one can confidently assign that .