44. SUMMARY OF THE MITOTIC PHASE Flashcards

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1
Q
  1. What is Prophase?
A
  • the chromatic fibres condense
  • they condense into distinct chromosomes
  • the nucleoli disappear
  • nuclear membrane degradation begins
  • the mitotic spindle begins to form
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2
Q
  1. What is the Mitotic Spindle made out of?
A
  • centrosomes
  • microtubules
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3
Q
  1. What is Prometaphase?
A
  • the nuclear envelope fragments
  • this is what starts the Prometaphase
  • the microtubules extend from each centrosome
  • these microtubules invade the nuclear area
  • they bind to the chromosomes
  • the chromosomes become more condensed
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4
Q
  1. What is Metaphase?
A
  • the centrosomes are now at opposite poles
  • the chromosomes are aligned along the Metaphase
    Plate
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5
Q
  1. What is the Metaphase Plate?
A
  • the imaginary plane that is equidistant
  • it is between the spindle’s 2 poles
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6
Q
  1. What is Anaphase?
A
  • the sister chromatids of each chromosome move
    towards opposite poles
  • the two poles of the cell have equivalent
    collections of chromosomes (chromatids)
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7
Q
  1. What is Telophase?
A
  • the nuclear envelope reforms
  • the nucleoli reappear
  • the two daughter nuclei form in the cell
  • the chromosomes de-condense
  • mitosis is now complete
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8
Q
  1. What is Cytokinesis?
A
  • this is the division of the Cytoplasm
  • the cells are completely separated during this stage
  • the division of the cytoplasm usually begins by late
    Telophase
  • the two daughter cells appear shortly after the end of
    Mitosis
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9
Q
  1. How does Cytokinesis occur in animal cells?
A
  • through a process known as Cleavage
  • this forms a cleavage furrow
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10
Q
  1. Provide the descriptions for the following labels.
A

1= Diploid (2n)
2= Tetraploid (4n)
3= Tetraploid (4n)
4= Tetraploid (4n)
5= Diploid (2n)

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