There are currently 8,614,790 lane miles of road in the lower 48 states. The average width of a highway lane is 11 feet. This means roads cover 17,947 square miles of land, or just six-tenths of 1 percent of the total land area of the contiguous 48 states.
Role of the centrosome in cell cycle progression. Centrosomes are associated with the nuclear membrane during prophase of the cell cycle. In mitosis the nuclear membrane breaks down and the centrosome nucleated microtubules (parts of the cytoskeleton) can interact with the chromosomes to build the mitotic spindle.he centrosome replicates during the S phase of the cell cycle. During the prophase in the process of cell division called mitosis, the centrosomes migrate to opposite poles of the cell. The mitotic spindle then forms between the two centrosomes. Upon division, each daughter cell receives one centrosome.
There are two pairs of Centrioles and each pair is termed as a centrosome. In a centrosome, Centrioles are arranged perpendicular to each other. Now, Centromere is a region inside a centrosome (middle part) and is the place where chromatids are in close contact.When cell division takes place, it is the spindle at the Centromere that helps a chromosome to get attached to it. The major function of Centrioles is to aid in cell division.n brief: Centriole vs Centromere. â¢ Centrioles are small organelles inside a cell while Centromere is a region in a chromosome. â¢ Centriole produces microtubules that attach to chromatids at the Centromere.