Old news. Pleiotropy is an example for it.
https://en.wikipedia.org/wiki/Pleiotropy
What is a bigger problem: Even an average idiot must now realize, that GM food may be riskier than you think.
What is a bigger problem: Even an average idiot must now realize, that GM food may be riskier than you think.
Yes and no. It may lead to dangerous expressions, but plain chemical testing and analysis prior to commercial release should ensure nothing toxic makes it into people's food.
If your apples suddenly start producing magnitudes more cyanide after modifying something, just don't sell them.
And you know exactly under what conditions the toxins are expressed. Not.