Dictionary » S » Spindle fibre

Spindle fibre

Definition

noun, plural: spindle fibres

Any of a network of filaments that collectively form a mitotic spindle (in mitosis) and meiotic spindle (in meiosis). It is chiefly involved in moving and segregating the chromosomes during nuclear division.


Supplement

In mitosis, these filaments form at opposite poles of the cell and meet at the equatorial plane. Collectively, they form a spindle-shaped structure, which is widest at the middle then tapers at both ends.

In mitosis, the spindle fibres form during prophase. During metaphase of cell division, the spindle fibres radiate from the centrioles at the opposite poles. Some of them attach to the kinetochores of the chromosomes while others bind to the arms of the chromosomes, still others continue to grow. When the spindle fibres start to pull the chromosomes (via their kinetochores) to opposite poles, this marks the anaphase of cell division.


Variant: spindle fiber

Synonym:


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Does NOT contain microtubles...

a) Hair fibres (if this is it, then does that mean this is a spindle fibre, cilia??) b) Flagella

See entire post
by TwinkleK
Sat Feb 11, 2012 9:43 pm
 
Forum: Human Biology
Topic: Does NOT contain microtubles...
Replies: 1
Views: 1607

Cell Cycle

... and centrosome divides to give to centriole on two poles. It forms spindle fibres on both the poles 2. Metaphase - In this phase the chromosomes come to the equatorial ...

See entire post
by asutoshsahu
Fri Oct 14, 2005 10:11 am
 
Forum: Genetics
Topic: Cell Cycle
Replies: 13
Views: 9819


This page was last modified 09:24, 31 May 2009. This page has been accessed 29,884 times. 
What links here | Related changes | Permanent link