Genetic modification is not simply the insertion of genes which act independently of the rest of the genome. These genes are inserted by a process that places them randomly.We now know that genes do not act independently of their neighbours in the genome and that are interactions at levels of gene product action beyond the DNA strands. Thus the assumption that adding genes is a mere mechanical event is incorrect and the consequences are impossible to predict with certainty. Thus the need to carry out appropriately designed feeding trials.
View the original article here: Precautionary principle should apply to GM food – Victoria Times Colonist