how might knowledge gained from the human genome project be used in gene therapy? by mapping the exact location and function of the 20,000-25,000 genes, gene therapy could be used to correct some genetic disorders in humans. a copy of the affected gene could be inserted directly into the person's cell.

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.