ch 8 vocab.txt

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zrmeyers20
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ch 8 vocab.txt
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2011-03-07 18:19:56
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  1. rod-shaped sturctures made of DNA and proteins
    chromosomes
  2. proteins which DNA is wrapped tightly around in eukaryotic cells
    histones
  3. one half of a chromosome
    chromatid
  4. the point where two chromatids are attached to make a chromosome
    centromere
  5. uncondesed, less tightly packed DNA-protein complex
    chromatin
  6. last chromosome that determines the sex of an organism
    sex chromosome
  7. chromosomes that carry the genes of organisms
    autosomes
  8. two copies of the same autosome
    homologous chromosomes
  9. a picture showing the chromosomes
    karyotype
  10. cells having two sets of chromosmes; produced by MITOSIS
    diploid
  11. cells having one set of chromosomes; produced by MEIOSIS
    haploid
  12. cell division in prokaryotic cells
    binary fission
  13. eukaryotic cell division that results in new cells with indentical genetic material to its parents; produces diploid cells
    mitosis
  14. eukaryotic cell division that results in new cells with half the number of chromosomes than its parents; produces haploid cells
    meiosis
  15. production of offspring from one parent
    asexual reproduction
  16. a haploid reproductive cell formed in Meiosis
    gametes
  17. the time between cell divisions
    interphase
  18. process where the cell divides at the cytoplasm
    cytokinesis
  19. first stage of mitosis; coiling of DNA; disappearing nucleus; forming of spindle fibers
    prophase
  20. made of microtubules
    spindle fibers
  21. second phase of mitosis; chromosomes move to the center of the cell
    metaphase
  22. third phase of mitosis; chromatids separate at the centromere and move towards opposite poles
    anaphase
  23. fourth step of mitosis; chromosomes reach opposite poles; spindle fibers dissasembles; nucleus is recreated
    telophase
  24. spot where cells divide during cytokinesis in ANIMALS
    cleavage furrow
  25. spot where cells divide during cytokinesis in PLANTS
    cell plate
  26. the pairing of homologous chromosomes in meiosis
    synapsis
  27. each pair of homologous chromosomes in synapsis
    tetrad
  28. portions of chromatids break off and attach to adjacent chromatids on homologous chromosomes
    crossing-over
  29. a new mixture of genetic material in meiosis created after crossing-over
    genetic recombination
  30. the random separation of the homologouse chromosomes in Anaphase I
    independent assortment
  31. the production of sperm cells
    spermatogenesis
  32. the production of mature egg cells
    oogeneis
  33. three products of oogenesis that eventually regenerate
    polar bodies
  34. the production of offspring through meiosis and the union of a sperm and an egg
    sexual reproduction

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