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Descriptor English: Meiotic Prophase I
Descriptor Spanish: Profase Meiótica I
Descriptor Portuguese: Prófase Meiótica I
Descriptor French: Prophase I de méiose
Entry term(s): Diakineses
Diakinesis
Diplonema
Diplonemas
Diplotene Stage
Leptotene Stage
Meiotic Prophase 1
Prophase 1
Prophase I
Prophase I, Meiotic
Stage, Diplotene
Stage, Leptotene
Stage, Zygotene
Stages, Zygotene
Zygonema
Zygonemas
Zygotene Stage
Zygotene Stages
Tree number(s): G04.144.220.220.687.444
G05.113.220.687.500
RDF Unique Identifier: https://id.nlm.nih.gov/mesh/D049469
Scope note: The prophase of the first division of MEIOSIS (in which homologous CHROMOSOME SEGREGATION occurs). It is divided into five stages: leptonema, zygonema, PACHYNEMA, diplonema, and diakinesis.
Allowable Qualifiers: DE drug effects
GE genetics
IM immunology
PH physiology
RE radiation effects
Previous Indexing: Meiosis (1968-2004)
Prophase (1978-2004)
Public MeSH Note: 2005
History Note: 2005
DeCS ID: 38841
Unique ID: D049469
Documents indexed in the Virtual Health Library (VHL): Click here to access the VHL documents
Date Established: 2005/01/01
Date of Entry: 2004/07/07
Revision Date: 2016/06/17
Meiotic Prophase I - Preferred
Concept UI M0464642
Scope note The prophase of the first division of MEIOSIS (in which homologous CHROMOSOME SEGREGATION occurs). It is divided into five stages: leptonema, zygonema, PACHYNEMA, diplonema, and diakinesis.
Preferred term Meiotic Prophase I
Entry term(s) Meiotic Prophase 1
Prophase 1
Prophase I
Prophase I, Meiotic
Leptotene Stage - Narrower
Concept UI M0464644
Scope note The first stage of meiotic prophase I when the CHROMOSOMES first become visible. Also called leptonema. Distinguish from the genus Leptonema.
Preferred term Leptotene Stage
Entry term(s) Stage, Leptotene
Diplotene Stage - Narrower
Concept UI M0464739
Scope note The stage during the first meiotic prophase, following PACHYTENE STAGE, when the SYNAPTONEMAL COMPLEX dissolves and the homologous CHROMOSOMES begin to separate.
Preferred term Diplotene Stage
Entry term(s) Diplonema
Diplonemas
Stage, Diplotene
Zygotene Stage - Narrower
Concept UI M0464647
Scope note The stage during meiotic prophase I, following LEPTOTENE STAGE, during which SYNAPSIS occurs between homologous CHROMOSOMES via the SYNAPTONEMAL COMPLEX.
Preferred term Zygotene Stage
Entry term(s) Stage, Zygotene
Stages, Zygotene
Zygonema
Zygonemas
Zygotene Stages
Diakinesis - Narrower
Concept UI M0464740
Scope note The stage of meiotic prophase I following DIPLONEMA when the homologous CHROMOSOMES complete CROSSING OVER and separation, and become fully condensed.
Preferred term Diakinesis
Entry term(s) Diakineses



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