About one-third of the retail trade industries â $7.5 million in average annual receipts. A few, such as grocery stores, department stores, motor vehicle dealers (except new car dealers) and electrical appliance dealers have a higher size standard, ranging from $11 million to $38.5 million in average annual receipts.
spindle fibers. Spindle fibers form a protein structure that divides the genetic material in a cell. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during both types of nuclear division: mitosis and meiosis. During mitosis, the spindle fibers are called the mitotic spindle.
The G1/S transition is a major checkpoint in the regulation of the cell cycle. S Phase: To produce two similar daughter cells, the complete DNA instructions in the cell must be duplicated.DNA replication occurs during this S (synthesis) phase.he G1/S transition is a major checkpoint in the regulation of the cell cycle. S Phase: To produce two similar daughter cells, the complete DNA instructions in the cell must be duplicated.