Cell Cycle

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Across
  1. 2. Divison of the cytoplasm
  2. 5. All cells are derived from pre-existing cells
  3. 8. All ___ cells store genetic information in chromosomes
  4. 11. The DNA of ___ prokaryotes is one, circular chromosome attached to the inside of the cell membrane.
  5. 13. Reproduction that involves a single cell dividing to make 2 new, identical daughter cells
  6. 16. discrete unit of hereditary infor consisting of a specific nucleotide sequence
  7. 17. “Putting it all together”
  8. 18. sister chromatids at opposite poles. A nuclear envelope forms around each set of sister chromatids
  9. 19. two division produce 3 polar bodies that die and 1 egg
  10. 20. Homologs pair. Crossing over occurs.
Down
  1. 1. produces gametes with one copy of each chromosome and thus one copy of each gene
  2. 3. alternative version of a gene (dominate and recessive Aa)
  3. 4. Divison of the Nucleus. Also called Karyokinesis
  4. 6. duplicated ___ are called chromatids and are held together by the centromere
  5. 7. pieces of chromosomes or genes are exchanged
  6. 9. reproduction that involves two cells (egg and sperm) joining to make a new cell that is NOT identical to the original cells
  7. 10. Each new cell will then have an identical copy of the DNA
  8. 12. Sister chromatids are pulled apart to opposite poles of the cell by kinetochore fibers
  9. 14. the phase of the cell cycle in which a cell copies its DNA to prepare for mitosis
  10. 15. Chromosomes, attached to the kinetochore fibers, move to the center of the cell