Term
| How do kinetochore microtubules work? |
|
Definition
One end is ‘capped’ - fixed
Other end grows and shrinks due to addition/exit of tubulin
Can be ‘capped’ |
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Term
| Microtubule directed movement can happen by: |
|
Definition
Move along unchanging microtubule
Associate with changing end and move as consequence of
elongation/shrinkage
Associate with fixed end and be pulled as a consequence of
growth/shrinkage at other end |
|
|
Term
| What are three ways that kinetochore microtubules work? |
|
Definition
Fluorescent labeling
Photobleaching
Observe |
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Term
| Why do kinetochore microtubules work the way they do? |
|
Definition
A motor protein associated with the kinetochore moves
the chromosomes down a stationary microtubule by
controlled depolymerization |
|
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Term
|
Definition
◦ Spindle poles move farther
apart
Due to actions of nonkinetochore
microtubules
Asters
OverlappingD |
|
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Term
|
Definition
◦ Chromosomes arrive at
spindle poles
◦ Nuclear envelope reforms
◦ Chromatin (chromosomes)
decondense |
|
|
Term
| Describe mitosis in plants |
|
Definition
◦ Constrained by cell wall
◦ No centrioles |
|
|
Term
| What are alternative mechanism that protist and yeast use for division? |
|
Definition
Dinoflagelllates-chromosomes are separated by the microtubules and surrounded by an intact nuclear envelope
Diatoms and some yeasts-use a kinetochore microtuble and have an intact nuclear envelope surrounding it |
|
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Term
|
Definition
Division of two cell bodies
Different in animals vs plants |
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