All biological variation is a result of the genetic information contained on the chromosome of the cell. For evolutionary change (horizontal change) to occur, there must be a change in this genetic information. The discovery of introns and exons on the chromosome of "higher" eukaryotic cells has suggested these cells may contain far more genetic information than previously realized. Despite evolutionary suggestions that introns allow for greater variation that ultimately leads to evolutionary change, the cell is actually less capable of undergoing such a change. The potential ramifications for evolutionary change are devastating.