"Atrazine has caused a hormonal imbalance that has made them develop into the wrong sex, in terms of their genetic constitution." Common weedkiller turns male frogs into females 2010-03-02T17:26:00Z
It might be just that my particular genetic constitution caused me to age more slowly than the average. Category Phoenix
And, giving in to gluttony, we effectively changed our genetic constitution. The Civilization of Illiteracy