Prophase II - Spindle fibers reform, and centrioles move to opposite ends. Metaphase II- Spindle fibers attach and move to equator in a single file line. Anaphase II - Spindle Fibers shorten and seperate, chromosomes into seperate chromitides and go to poles.
1 Hiring a remodeling contractor to build a second floor addition can run $100-$300 a square foot for the typical addition (2-3 bedrooms and a bath plus a flight of stairs), but can go as high as $400-$500 per square foot depending on complexity, quality of materials and local labor rates.uilding a second floor (also called a second story) can added much-needed space, but costs at least 20 percent more than building the same square footage at ground level. However. if you don't have the land to build out it can make sense to go up. Typical costs:
1 Check with your local planning department, even if you're just adding flooring in the attic for additional storage space. 2  Adding living space in an attic always requires a permit to be sure the remodeled room meets all code standards such as sufficient ventilation and a second fire exit (a window will do). Installing a pull-down staircase is similar to installing a pre-hung door and installation costs anywhere from $75-$300 or more depending on location and the complexity of the project.