Exposure of wild rat populations to warfarin led to the evolution of warfarin-resistant rats. These rats had a mutated version of the VKORC1 gene, indicating that ____ had occurred in these resistant rat populations.
A) extinction
B) stabilizing selection
C) microevolution
D) macroevolution
E) artificial selection

Question

​Exposure of wild rat populations to warfarin led to the evolution of warfarin-resistant rats. These rats had a mutated version of the VKORC1 gene, indicating that ____ had occurred in these resistant rat populations.
A) ​extinction
B) ​stabilizing selection
C) ​microevolution
D) ​macroevolution
E) ​artificial selection

Quizplus · Accepted Answer

Microevolution refers to small evolutionary changes within a species or population, often involving changes in allele frequencies over time. The development of warfarin resistance in rats due to a mutation in the VKORC1 gene is an example of microevolution, as it represents a genetic adaptation to an environmental pressure within a population.

​Exposure of Wild Rat Populations to Warfarin Led to the Evolution

Exposure of Wild Rat Populations to Warfarin Led to the Evolution