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Transcript
Name_________________________________________Pd._____Date_________ Extra Credit: Cell Cycle and Mitosis Ch. 6 Completion Complete each sentence or statement. 1. Following replication of its DNA, each chromosome contains two ____________________, which are attached to each other by a centromere. 2. The DNA in eukaryotic cells is packaged into structures that are called ____________________. 3. A(n) ____________________ is a segment of a DNA molecule that carries the instructions for producing a specific trait. 4. Collectively, the time spent in G1 + S + G2 is called ____________________. 5. A cell’s DNA is copied during the ____________________ phase. 6. Cells that are not dividing remain in the ____________________ phase. 7. Normal cell growth and cell division are stimulated by ____________________. 8. DNA replication is checked at the ____________________ checkpoint. 9. Loss of control and regulation of the ____________________ ____________________ can result in the development of cancer. 10. Cancer is a disease of ____________________ ____________________. 11. “Cables” made of microtubules that extend from the poles of a cell to the centromeres during cell division are called ____________________ ____________________. 12. Spindle fibers are made of hollow tubes of protein called ____________________. 13. In mitosis, anaphase follows ____________________. 14. Chromosomes coil up into short, fat rods during ____________________. 15. Chromosomes coil up and become visible during ____________________. 16. Chromatids migrate toward poles as spindle fibers shorten during ____________________. 17. In many eukaryotic cells, ____________________ takes place after the nucleus divides. 18. After a new nuclear membrane forms during telophase of mitosis or meiosis, the ____________________ divides, resulting in two cells. 19. In plant cells, a(n) ____________________ ____________________ forms in the center of the cell during cytokinesis.