Term Name:	oocyte/zygote/embryo maturation arrest 21
Synonyms:	female infertility due to oocyte meiotic arrest, OZEMA21
Definition:	An oocyte/zygote/embryo maturation arrest that is characterized by female infertility caused by zygote arrest due to pronuclei fusion failure and that has_material_basis_in heterozygous mutation in the CHEK1 gene on chromosome 11q24.2.
Ontology:	Human Disease [DOID:0061323]   ( DOID:0061323 )