Evidence of glyphosate as a potent agent of selection on weed populations includes

A) independent mutations of a single amino acid in the EPSPS gene in ryegrass and goosegrass species, enabling plants to survive.
B) gene duplication in Palmer amaranth resulting in extra copies of the EPSPS gene so that enough enzyme is produced, enabling plants to survive.
C) a and b
D) none of the above

Glyphosate

A broad-spectrum systemic herbicide and crop desiccant, known for its use in agriculture to kill weeds, especially those resistant to other herbicides.

EPSPS Gene

A gene encoding the enzyme 5-enolpyruvylshikimate-3-phosphate synthase, crucial for the biosynthesis of aromatic amino acids in plants and microorganisms.

Weed Populations

Groups of unwanted plants that compete with cultivated plants for resources, often in agricultural settings or natural environments.