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Across 4. segregates homologs; reductional cell division (2 Words) 6. segregates sister chromatids of each homolog; equational division (2 Words) 8. non dividing state; exit from the cell cycle; most of the cells in our body are in this state 11. process that is carried out for the purpose of sexual reproduction 12. describes the fact that cells can undergo a limited number of cell divisions; cells are in nondividing state which they can not exit (3 Words) 14. a four chromatid structure formed by the association of duplicated homologs 15. a third of model for the role of the mitotic spindle in specifying the sit of cell division; astral microtubules promote the relaxation of actin-myosin bundles all along the cortex except at the spindle equator (3 Words) 18. stimulate cell division through G1/S-Cdk acitvity; extracellular simulatory factors; function to simulate cell division by relieving negative regulatory controls 19. division of the cytoplasm; last step of the cell cycle 20. the structure that holds paired homologs together (2 Words) 21. activated at the cell cortext at the division site to promote actin filament formation; monomeric GTP binding protein controlled by RhoGAP and RhoGEF 22. formed by the components of the cleavage furrow; tethers the two daughter cells together 23. one of the models for the role of the mitotic spindle in specifying the sit of cell division; astral microtubules carry "cleavage furrow" inducing signals to the cell cortex to promote furrow formation at a position half way between each pole (3 Words)

Down 1. producing two cells that differ significantly in size and/or cytoplasmic content (3 Words) 2. a seond of model for the role of the mitotic spindle in specifying the sit of cell division; the spindle midzone generates a "cleavage furrow inducing signal" which designates the position of the contractile ring (4 Words) 3. stimulate cell growth by promoting protein synthesis (2 Words) 5. responsible for forming the cleavage furrow; structure beneath the plasma membrane; forms during anaphase at sister chromatid separation (2 Words) 7. paired chromosomes; results from duplication during S-phase (2 Words) 9. promote cell survival by suppressing cell death (2 Words) 10. enzyme responsible for generating telomere sequence 13. at least half of all human cancers are linked to mutations in this gene; transcription factor; target gene includes p21 16. exhange of DNA between homologous non-sister chromatids; generates a chiasma 17. tight linkage of paired homologs through transver filaments