A method and apparatus for position dependent data scheduling for communication of data for different domains along a bus is provided. At least one opening is provided in a wall of the main body surrounding the receptacle space. The frame has an opening for receiving a bottom protrusion of the heat sink therein. A second member is pivotally coupled to the first member. This invention further relates to methods for producing maize lines derived from hybrid maize line 37D25 and to the lines derived by the use of those methods.