Question

Why might genetically engineering a crop to be herbicide resistant result in producing weeds that are herbicide resistant?
The genetically engineered design is flawed so weeds are not affected.
The weeds that are not affected by the herbicide are able to reproduce.
Insects that are not affected by the herbicide can pollinate new species of weeds.
The weeds will become tolerant to the herbicide through repeated exposure.

Answer 1

the last one i believe

Answer 2

thank you