Herbicide resistance and Bt genes from GMO crops are now commonly found in weeds.This is an example of
A) genetic drift.
B) the bottleneck effect.
C) gene flow.
D) the Red Queen effect.
E) disruptive selection.

Question

Quizplus · Accepted Answer

The occurrence of herbicide resistance and Bt genes in weeds is a result of gene flow, which occurs when genes are transferred from one population to another through interbreeding or pollen exchange. The use of GMO crops that contain these genes has increased the frequency of their occurrence in weed populations through natural selection, which favors individuals that are resistant to herbicides or can withstand the toxic effects of Bt proteins. This has resulted in an increase in the prevalence of these traits in weed populations, which can further reduce the effectiveness of herbicides and increase crop damage.

Herbicide Resistance and Bt Genes from GMO Crops Are Now