Question

The ridged allele increased by 30 percent between generations, which was likely caused by having a small, nonrandomly mating population.

The ridged allele increased by 30 percent between generations, which was likely caused by mutations in several of the smooth-shelled beetles.

The ridged allele increased by 33 percent between generations, which was likely caused by having a large population in a small enclosure.

The ridged allele increased by 33 percent between generations, which was likely caused by isolating this population from other beetle populations.