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Unformatted text preview: a. chromosomes lined up at equator b. centromeres (kinetochores) divide (chromosomes become single-stranded) c. what signals the end of metaphase? the replicated chromosomes separate (become single-stranded). C. transition to Anaphase a. sister chromatids pulled apart by shortening microtubules b. chromatid to chromosome, as soon as its divided c. How many chromosomes? 8 D. Anaphase a. chromosomes move toward poles b. cytokinesis begins (signals end of anaphase) E. Telophase a. cleavage furrow b. chromosomes decondense c. 2 nuclear membranes form around single-stranded chromosomes ** Cytokinesis 2 mechanisms: cell plate formation in plants, cleavage in animals ** Tumors : sometimes checkpoint gene mutates and control over cell division is lost uncontrollable division forms abnormal mass = tumor cancer is genetic bc it involves mutation of genes chemotherapy stops cell divison...
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