Dictionary » K » Kinetochore

Kinetochore

A specialized condensed region of each chromosome that appears during mitosis where the chromatids are held together to form an X shape; the centromere is difficult to sequence.


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Centromeres in a resting nucleus

... sequences have no function in non-dividing cells? So, the centromeres must have sequences which only help them to bind to microtubules via the kinetochore. What do you think about it?

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by Adz795
Sun Dec 04, 2011 9:55 am
 
Forum: Cell Biology
Topic: Centromeres in a resting nucleus
Replies: 3
Views: 1567

Re: Meiosis produce haploid cells, twice. How?

... looks like this because the DNA that makes up the chromosome has replicated, and the copy strand is still attached to the original strand by the kinetochore. The chromosome remains in this form until anaphase of mitosis or anaphase II of mitosis at which point the spindle apparatus pulls the ...

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by angusrose
Mon Oct 24, 2011 11:12 am
 
Forum: Cell Biology
Topic: Meiosis produce haploid cells, twice. How?
Replies: 4
Views: 40085

Re: Campbell and Reece 8th edition

thank you for that pg 233 The two liberated daughter chromosomes begin moving toward opposite ends of the cell as their kinetochore shorten. Because these microtubules are attached at the centromere region, the chromosomes move centromere first (at about 1um/min). what does this mean? ...

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by Stephen1993
Sat May 14, 2011 4:05 am
 
Forum: Cell Biology
Topic: Campbell and Reece 8th edition
Replies: 36
Views: 23100

spindle checkpoint - checkpoint signals

... Two types of signals have been implicated in metaphase checkpoint arrest. Consider the results of a recent experiment in which the unattached kinetochore of a monoattached chromosome was destroyed by a laser beam. It was found in this study that, following destruction of the kinetochore, the ...

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by Hudson
Tue Mar 15, 2011 6:33 pm
 
Forum: Cell Biology
Topic: spindle checkpoint - checkpoint signals
Replies: 0
Views: 1979

Please help me label the different parts of meiosis stage?

Maybe can change centromere and kinetochore.

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by magicsiew
Wed Nov 24, 2010 5:51 pm
 
Forum: Genetics
Topic: Please help me label the different parts of meiosis stage?
Replies: 3
Views: 3146
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