Which situation would most likely result i the greatest change in gene frequency in a population ?
a) a single individual leaves a large population
b) a large population loses a few individuals
c) a bird has two alleles for a certain feather color
d) a predator eats one phenotype rather than another for a year

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.