holoblastic cleavage

hol·o·blas·tic cleav·age

cleavage in which the blastomeres are completely separated; the entire egg participates in cell division.

Synonym(s): complete cleavage, total cleavage

Farlex Partner Medical Dictionary © Farlex 2012

holoblastic cleavage

Cleavage of a fertilized egg into two parts (blastomeres), each of which can form an entirely separate individual.

Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

holoblastic cleavage

see CLEAVAGE.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

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cleavage

References in periodicals archive ?

The zygote then undergoes radial, holoblastic cleavage and forms a hollow coeloblastula.

Early development and acquisition of zooxanthellae in the temperate symbiotic sea anemone Anthopleura ballii (cocks)

Holoblastic cleavage is practiced in each of the approximately 31 phyla.

Cleavage patterns and mesentoblast formation in the Gastropoda: an evolutionary perspective

Although microtubules have been correlated with cytoplasmic movements that follow fertilization in amphibians (4), ascidians (5), and annelids (6), these embryos do not form blastodisc caps and, unlike the squid, they undergo complete or holoblastic cleavage. Interestingly, ooplasmic segregation, blastodisc cap formation, and meroblastic cleavage all take place in the zebrafish embryo, but here microfilaments and not microtubules have been shown to direct the segregation of ooplasm from the yolk (7).