Which statement best explains the difference in the mouse populations on Island A and Island B at the end of the 20 years? More brown mice were in the half of the original population that was sent to Island B than in the group sent to Island A.

Conditions on Island B favored the individuals with brown fur, while both fur colors were evenly favored on Island A.

On Island A, the allele for gray fur was dominant, while on Island B, the allele for brown fur was dominant.

The recapturing of mice on Island A and Island B was done differently.