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Concern about the effects of pesticides on human health and the environment, has been a major rationale for pro- moting  transgenic crops, often  referred  to as genetically modied organisms (GMOs), or as genetically  enhanced (GE) crops.   Companies  that sell genetically engineered crop plants claim that biotechnology offers a safe alterna- tive to agricultural chemicals and is  necessary to feed the world’s expanding human population. However, there are still many unknowns about the safety of GMOs for human health and the  environment, and virtually nothing is known about  how  the  genomes  of  organisms may  be  affected by horizontal transfer of alien genes into plants, animals, and even humans. An alternative approach  to  transgen- ic  technology  is  the exploitation of benecial genes  from wild  relatives of crop plants using conventional breeding methods. This paper describes how genetic engineering differs  from conventional plant breeding,  then compares and  contrasts benets  from  transgenic engineering with traditional methods of crop  improvement. An example of how the ancestral genes model has been employed to im- part an insect resistance trait to corn based on native re- sistance  from  a wild  relative  is  compared  to  transgenic corn with  resistance  to  the same  insect engineered with a transgene from a bacterium. Using the ancestral genes approach, harmful chemicals used to control the worst in- sect pest of corn can be eliminated with no  consequenc- es to human health or the environment; whereas with the transgenic approach,  there are many safety concerns  in both arenas.

Ancestral Genetic Resources Provide an Alternative to GMO Crops