Mitosis definitions

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Author:
efrain12
ID:
207561
Filename:
Mitosis definitions
Updated:
2013-03-15 22:28:47
Tags:
bios
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Description:
definitions
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  1. Chromosome
    structure composed of a DNA molecule and associated proteins
  2. Chromatin (2)
    -material that makes up eukaryo chromosomes.

    -consists of a DNA molecule complexed with histone proteins
  3. Chromatid
    one strand of a replicated chromosome with its associated proteins
  4. Sister chromatids (3)
    -two strands of a replicated chromosome

    -when chromosomes are replicated they cosnist of 2 sister chromatids

    -when they separate during mitosis, they beomce independent chromosomes
  5. Centromere
    structure that joins sister chromatids
  6. Kinetochore
    structure on sister chromatids where spindle fibers attach
  7. Micortubule organizing center
    any structure that organizes microtubules
  8. Centrosome
    microtubule organizing center in animals
  9. Centriole
    cylindrical sturctures that comprise microtubules

    *located inside centrosomes

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