Across 4. third stage of mitosis, spindle apparatus begins to shorten. 8. control the production of proteins. 9. proteins that bind to enzymes. 12. the first stage and longest phase of mitosis. 14. programmed cell death. 16. ensures that a copy of replicated DNA will become part if the daughter cell at the end of the cell cycle. 17. the stage in which the cell grows, carrying out cellular functions, and replicates DNA. 19. a cell that contains 2N number of chromosomes. 20. one haploid gamete combine with another haploid gamete to cause. 21. substances and agents that are known to cause cancer. 23. structures that contain identical copies of DNA. (2 Words) 25. chromosomes that make up a pair, one chromosome from each parent. (2 Words) 26. the stages of the cell cycle during which the cells nucleus nuclear material divide.

Down 1. uncontrolled growth and division of cells. 2. second stage of mitosis, sister chromatids are pulled to the equator of the cell. 3. unspecialized cells that can develop into specialized cells under the right conditions. (2 Words) 5. last stage of mitosis, chromosomes arrive at the poles and begin to decondense. 6. cells reproduce by a cycle of growing and dividing. (2 Words) 7. cyclins bind to these enzymes. (2 Words) 10. the relaxed form of DNA in the cell's nucleus. 11. the method by which a cells cytoplasm divides. 13. a cell with N number of chromosomes. 15. important in moving and organizing the chromosomes. (2 Words) 18. structures that contain the genetic material that is passed from generation to generation. 22. type of cell division that reduces the number of chromosomes. 24. to maintain the same chromosome number from generation to generation, these are produced.