Violence alters human genes for generations, researchers discover

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4. This finding appears to add some measure of Lamarckian Inheritance theory to Darwinian evolution by natural selection.

According to Darwinian evolution, constant environmental culling eliminates those who do not survive long enough to pass on viable offspring. Only the most adaptable genes remain. The remaining genes are unaltered by the practices or experiences of past generations.

In a slight twist, this study of Syrian families demonstrates an imprint on the genes of subsequent generations. It doesn't cancel out Darwinian evolution but adds a new complication. More study is needed showing to what extent genes can be altered by life experience.

I do not wish to underplay the human tragedy involved with this study. The social implications are important. But the biological evidence can also add a better understanding of the human condition.