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Complete cleavage



(embryology) The complete division of an isolecithal or microlecithal egg into blastomeres.


Depending mostly on the amount of yolk in the egg, the cleavage can be holoblastic (complete or total) or meroblastic (partial). The holoblastic type of cleavage is commonly seen in eggs containing moderate to sparse amount of yolk. Examples of animals with eggs that divide holoblastically include the amphibians, mammals, echinoderms, annelids, flatworms, nematodes, etc.


Compare: meroblastic cleavage

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Re: Unusual cell division- Identifying mutant protein and genes

... now surrounded by new nuclei, unfold back into chromatin. Mitosis is complete, but cell division is not yet complete. [edit] Cytokinesis Main ... process, necessary for completing cell division. In animal cells, a cleavage furrow (pinch) containing a contractile ring develops where the ...

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by dharavsolanki
Sat Feb 19, 2011 3:07 pm
Forum: Molecular Biology
Topic: Unusual cell division- Identifying mutant protein and genes
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The Fiber Disease

... between amino acids of proteins. The process is called proteolytic cleavage, a common mechanism of activation or inactivation of enzymes, especially ... depending on the amino acid sequence of a protein, or break down a complete peptide to amino acids (unlimited proteolysis). The activity can ...

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help! biology terms needed!

... Unlike gap junctions, allows the transfer of large macromolecules. The cleavage furrow is an actin rich "purse string" that draws tight to separate daughter cells to complete cytokinesis in cell division.

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by Carolynparsons
Thu Jan 12, 2006 6:25 pm
Forum: Cell Biology
Topic: help! biology terms needed!
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