TIME magazine's cover story on the new science of epigenetics examines evidence that environmental factors like diet and stress can make an imprint on ones gene's without changing the DNA, and can be passed down from one generation to the next.
I still can't wrap my mind around the possible implications of epigenetics on the "I was born this way" argument, commonly heard from many claiming genetic predisposition for behaviors such as homosexuality and sexual infidelity. But the article reminded me of the numerous Biblical warnings about sin and its consequences passed down from fathers and succeeding generations.
And he passed in front of Moses, proclaiming, "The Lord, the Lord, the compassionate and gracious God, slow to anger, abounding in love and faithfulness, maintaining love to thousands, and forgiving wickedness, rebellion and sin. Yet he does not leave the guilty unpunished; he punishes the children and their children for the sin of the fathers to the third and fourth generation." Exodus 34:6-7 (NIV)