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Why can herbicide-resistant crops contribute to the evolution of herbicide-resistant weeds?

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Vaccine development — genetic engineering The generation of vaccines relies heavily on techniques in genetic engineering.

Herbicide-resistant crops (HRCs) contribute to the evolution of herbicide-resistant weeds primarily through the selection pressure created by the repeated and increased application of specific herbicides, such as glyphosate.123

Because HRCs are genetically engineered to survive exposure to these chemicals, farmers can spray fields liberally to eliminate competing vegetation. This practice creates a strong evolutionary pressure: weeds that possess natural variations or mutations allowing them to survive the herbicide are more likely to reproduce and pass on these resistant traits. Over time, this leads to the development of "super-weeds" that are no longer controlled by the chemicals they were designed to tolerate.123

Furthermore, the widespread use of these crops has led to a significant increase in the total volume of herbicides applied to agricultural land. This intensive reliance on a single mode of chemical control accelerates the selection process for resistance. Additionally, gene flow from engineered crops to wild plant relatives can occur via pollen and seeds, potentially transferring resistance traits to wild populations.123