Transcription of How genetic engineering differs from conventional breeding ...
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How genetic engineering differs from conventional breeding ...
genetic engineering IS NOT AN EXTENSION OF conventional PLANT breeding ; How genetic engineering differs from conventional breeding , hybridization, wide crosses and horizontal gene transfer by Michael K. Hansen, Research Associate Consumer Policy Institute/Consumers Union January, 2000 genetic engineering is not just an extension of conventional breeding . In fact, it differs profoundly. As a general rule, conventional breeding develops new plant varieties by the process of selection, and seeks to achieve expression of genetic material which is already present within a species. (There are exceptions, which include species hybridization, wide crosses and horizontal gene transfer, but they are limited, and do not change the overall conclusion, as discussed later.)
Genetic engineering works primarily through insertion of genetic material, although gene insertion must also be followed up by selection. This insertion process does not occur in nature. A gene “gun”, a bacterial “truck” or a chemical or electrical treatment inserts the genetic material into the host plant cell and then, with the help of
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