(lo4.16) a polygenic disease would be a bad target for gene therapy because
a. polygenic diseases cause symptoms in too many organs to be treated effectively by changing one gene.
b. many genes would have to be successfully changed to treat the disease.
c. in polygenic diseases the gene mutates each time the affected cells divide by mitosis.
d. the parents as well as the children would have to be treated with gene therapy to treat the disease.

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.

the answer is c a tornado

they have identical fossils of organisms that have evolved over time.

both have animal fossils preserved in them due to weathering and erosion.

they contain different fossils because life on earth has changed through time.

the fossils in them were formed on the surface of earth due to exposure to sunlight.