Editing Centrolecithal

'''Centrolecithal''' (''Greek'' kentron = center of a circle, lekithos = yolk) describes the placement of the [[yolk]] in the centre of the [[cytoplasm]] of [[ovum|ova]].<ref>{{Cite journal |last=Ryder |first=John A. |date=1883 |title=The Law of Nuclear Displacement, and Its Significance in Embryology |url=https://www.jstor.org/stable/1759005 |journal=Science |volume=1 |issue=10 |pages=273–277 |doi=10.1126/science.ns-1.10.273 |jstor=1759005 |pmid=17771470 |bibcode=1883Sci.....1..273R |issn=0036-8075}}</ref> Many [[arthropod]] eggs are centrolecithal.<ref>{{Cite journal |last1=Müller |first1=Yara |last2=Ammar |first2=Dib |last3=Nazari |first3=Evelise |date=March 2004 |title=Embryonic development of four species of palaemonid prawns (Crustacea, Decapoda): pre-naupliar, naupliar and post-naupliar periods |journal=Revista Brasileira de Zoologia |language=en |volume=21 |pages=27–32 |doi=10.1590/S0101-81752004000100005 |issn=0101-8175|doi-access=free }}</ref>

During [[cytokinesis]], centrolecithal [[zygotes]] undergo meroblastic cleavage, where the cleavage plane extends only to the accumulated yolk and is superficial. This is due to the large dense yolk found within centrolecithal eggs and triggers a delayed embryonic development.

==See also==

* [[Cell cycle]]
* [[Isolecithal]]
* [[Telolecithal]]

== References ==
{{Reflist}}
[[Category:Cell biology|Centrolecithal]]

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