Ontologies
PATO
Phenotype And Trait Ontology (PATO)
OWL
Last submission date February 1, 2025
ID http://purl.obolibrary.org/obo/UBERON_0000107
http://purl.obolibrary.org/obo/UBERON_0000107
https://agroportal.lirmm.fr/ontologies/PATO/UBERON_0000107
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Preferred name

cleavage stage

Definitions
The first few specialized divisions of an activated animal egg; Stage consisting of division of cells in the early embryo. The zygotes of many species undergo rapid cell cycles with no significant growth, producing a cluster of cells the same size as the original zygote. The different cells derived from cleavage are called blastomeres and form a compact mass called the morula. Cleavage ends with the formation of the blastula.
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