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.
Some of the spindle fibers extend out and connect to a kinetochore on either side of the centromere. The spindle fibers pull and tug on the kinetochores until all the chromosomes are lined up across the center of the cell. During metaphase, the spindle fibers form a lemon-shaped array. This is called the mitotic spindle.