Dictionary » A » Animal pole

Animal pole

Animal pole

(Science: cell biology) in most animal oocytes the nucleus is not centrally placed and its position can be used to define two poles. That nearest to the nucleus is the animal pole and the other is the vegetal pole, with the animal vegetal axis between the poles passing through the nucleus. During meiosis of the oocyte the polar bodies are expelled at animal pole.

in many eggs there is also a graded distribution of substances along this axis, with pigment granules often concentrated in the animal half and yolk, where present, largely in the vegetal half.


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



Results from our forum


HELP: regulative embryos, nuclear equivelance..,

... covered regulative embryos. ---the diagram Im looking at has a labeled animal pole that says "has nucleus" and a labeled vegetal pole that says "has yolk ...

See entire post
by psychic_pizza
Sat Oct 13, 2007 11:51 pm
 
Forum: Cell Biology
Topic: HELP: regulative embryos, nuclear equivelance..,
Replies: 0
Views: 1737

HELP:Regulative embryos experiments, nuclear equivelance, ..

... covered regulative embryos. ---the diagram Im looking at has a labeled animal pole that says "has nucleus" and a labeled vegetal pole that says "has yolk ...

See entire post
by psychic_pizza
Sat Oct 13, 2007 6:40 am
 
Forum: Zoology Discussion
Topic: HELP:Regulative embryos experiments, nuclear equivelance, ..
Replies: 0
Views: 2226

Help about Extinct Animals?

... of the dodo. :wink: carina sterni bone? Another Stein's fav extinct animal: Mammoth ( Mammuthus sp.) - Pleistocene epoch http://library.thinkquest.org/11922/extinct/mammoth.jpg ... was found as naturally preserved by burried under the icebed on the pole, was eaten by several scientists ...

See entire post
by Dr.Stein
Thu Nov 16, 2006 3:28 am
 
Forum: Evolution
Topic: Help about Extinct Animals?
Replies: 11
Views: 41290

centrisome

... you can fudge it: The primary microtubule organising center (MTOC) of animal cells, that divides prior to cell division each daughter MTOC acts as one pole of the spindle apparatus. The centrosome usually contains a pair of centrioles.

See entire post
by Terry K.
Fri Dec 02, 2005 10:31 pm
 
Forum: Cell Biology
Topic: centrisome
Replies: 2
Views: 4076


This page was last modified 21:16, 3 October 2005. This page has been accessed 11,693 times. 
What links here | Related changes | Permanent link