contain many extra copies of the Drosophila genome. After Processing,hnRNPs in thesr nuclei can be seen moving to the nuclear periphery at an equal rate in all directions.THe rate of movement,approximately 1 μm/sec, is what would be expected for movemeent by passive diffusion. Molecular motors move cargoes at a wide range of rates,from a few tenths of a micron per second to 10 μm/sec.These motors,however,generally move carhoes along filaments and in a highiy directional manner and do not appear to by involved in mRNA export.