The driver represents DNA in a 100-fold excess. The mechanism underlying 'sequence sluffing' has not yet been demonstrated. Many species show nuclear genome size variation. Sunflower seeds produced from the center of a sunflower head showed apparent lower copy number of mid-repetitive sequence elements, perhaps a slightly differeng GC content and a shorter mitotic cycle than did seed produced from the periphery of the head. Transposons within the McClintock context Barbara McClintock earned a Nobel Prize for her elucidation of transposition.
Transposable elements are common genetic characteristics.
Read the McClintock paper. McClintock was a cytogeneticist, and could utilize cytogenetic markers as well as genes which affected visible phenotype to identify chromosomally significant events. McClintock worked with two mutable elements. Ds is dissociator. Ds move in the plant.