Students must also label cell structures like the centrioles, aster, spindle, and nuclear membrane. Still, very rarely mistakes in copying or dividing chromosomes are made, and these mistakes can have negative consequences for cells and for people. Students read about each of the phases of the cell cycle and label and color a diagram that shows details of interphase, prophase, metaphase, anaphase, and telophase. Fortunately, our cells have amazing systems to copy chromosomes almost perfectly and to make sure that one copy goes to each daughter cell. We need each of our cells to receive exactly one copy of each chromosome, and each copy needs to be perfect, no mistakes, or the cells may have trouble following the genetic instructions. Otherwise, we might not be able to follow the instructions and things could go wrong. We don't want to accidentally give one person two copies of page four and one person zero copies of page four. With our instruction manual example, it is really important that each person gets one copy of every page. Each worksheet has an answer key This worksheet packet covers the following topics:The Cell Cy. This packet will help you teach the Cell Cycle. Worksheet types include: Cornell Notes, coloring worksheets, and diagram identification. In mitosis, a cell copies each chromosome, then gives one copy to each of two daughter cells. Each worksheet is differentiated for 2 levels of learning: Advanced and General. Copy each page, then give one copy to each of two people. We can think about mitosis like making a copy of an instruction manual.