Dictionary » S » Spindle apparatus

Spindle apparatus



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.


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.

Synonym: spindle fibre

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... The nuclear membrane and nucleolus are no longer visible. The spindle apparatus has migrate to opposite poles of the cell.. 3. Metaphase The spindle fibres attach ...

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by HerrBiologie
Sun Oct 30, 2011 9:16 am
Forum: Cell Biology
Replies: 2
Views: 5176

Re: Meiosis produce haploid cells, twice. How?

... until anaphase of mitosis or anaphase II of mitosis at which point the spindle apparatus pulls the replicated chromosome apart forming 2 new chromosomes, each of which is ...

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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: 57801

Re: Theories - Origin of Life

... sesamoid bone and the accessory carpal bone form a double pincer-like apparatus in the medial and lateral sides of the hand, respectively, enabling ... is not uncommon for it leave behind seven to nine kilograms of woody, spindle-shaped droppings. On average a panda produces 13 kilograms of droppings ...

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by scottie
Mon May 09, 2011 9:44 pm
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 563
Views: 1127363

Direction of Cell division

You could also add that centrioles begin the spindle apparatus in the cell for its orientation during cellular division. This would be the intracellular ...

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by kolean
Tue Jun 08, 2010 1:39 pm
Forum: Cell Biology
Topic: Direction of Cell division
Replies: 2
Views: 2456

Some meiosis help please

... to draw what the cell will look like when the chromosomes attach to the spindle apparatus. Should I draw them the chromosomes in the letter-letter orientation the are shown ...

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by ctn07
Tue Feb 24, 2009 1:25 am
Forum: Genetics
Topic: Some meiosis help please
Replies: 2
Views: 1794
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