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meiotic chromosome segregation definition: The process by which genetic material, in the form of chromosomes, is organized and then physically separated and apportioned to two or more sets during the meiotic cell cycle. [GOC:ai]
meiotic sister chromatid segregation definition: The cell cycle process whereby sister chromatids are organized and then physically separated and randomly apportioned to two sets during the second division of the meiotic cell cycle. [GOC:ai, ISBN:0815316194]
premeiotic DNA synthesis definition: The replication of DNA that precedes meiotic cell division. [GOC:ai]
reciprocal meiotic recombination definition: The cell cycle process whereby double strand breaks are formed and repaired through a double Holliday junction intermediate. This results in the equal exchange of genetic material between non-sister chromatids in a pair of homologous chromosomes. These reciprocal recombinant products ensure the proper segregation of homologous chromosomes during meiosis I and create genetic diversity. [PMID:2087779]
Meiotic Recombination definition: Extensive Meiotic Recombination occurs during meiosis when the cell performs a round of DNA replication (meiS) followed by homolog synapsis and recombination that involves breakage of chromosomes or DNA molecules and rejoining of fragments in new combinations.
meiotic DNA recombinase assembly definition: During meiosis, the aggregation, arrangement and bonding together of strand exchange proteins (recombinases) to form higher order oligomers on single-stranded DNA. [GOC:elh, PMID:11459983]
meiotic recombination nodule assembly definition: During meiosis, the aggregation, arrangement and bonding together of strand exchange proteins (recombinases) to form small, electron dense structures in association with meiotic chromosomes. [GOC:jl, PMID:9334324]
meiotic DNA repair synthesis definition: During meiosis, the synthesis of DNA proceeding from the broken 3' single-strand DNA end that uses the homologous intact duplex as the template. [GOC:elh, PMID:9334324]
meiotic joint molecule formation definition: The conversion of the paired broken DNA and homologous duplex DNA into a four-stranded branched intermediate, known as a joint molecule, formed during meiotic recombination. These joint molecules contain Holliday junctions on either side of heteroduplex DNA. [GOC:elh, PMID:8521495]
meiotic mismatch repair definition: A system for the identification and correction of base-base mismatches, small insertion-deletion loops, and regions of heterology that are present in duplex DNA formed with strands from two recombining molecules. Correction of the mismatch can result in non-Mendelian segregation of alleles following meiosis. [GOC:elh, PMID:10357855]
meiotic anaphase I definition: A cell cycle process comprising the steps by which a cell progresses through anaphase of meiosis I; analogous to mitotic anaphase. [GOC:dph, GOC:mah]
meiotic G2/MI transition definition: The cell cycle process whereby a cell progresses from meiotic prophase to metaphase I. [PMID:15088480]
meiotic metaphase I definition: A cell cycle process comprising the steps by which a cell progresses through metaphase of meiosis I; analogous to mitotic metaphase. [GOC:dph, GOC:mah]
meiotic prophase I definition: A cell cycle process comprising the steps by which a cell progresses through prophase of meiosis I; divided into several stages. [GOC:dph, GOC:mah]
Meiotic Prophase I definition: 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.
meiotic gene conversion definition: The cell cycle process whereby genetic information is transferred from one helix to another. It often occurs in association with general genetic recombination events, and is believed to be a straightforward consequence of the mechanisms of general recombination and DNA repair. For example, meiosis might yield three copies of the maternal version of an allele and only one copy of the paternal allele, indicating that one of the two copies of the paternal allele has been changed to a copy of the maternal allele. [ISBN:0815316194]
meiotic heteroduplex formation definition: During meiosis, the formation of a stable duplex DNA that contains one strand from each of the two recombining DNA molecules. [GOC:elh, PMID:9334324]
meiotic anaphase II definition: A cell cycle process comprising the steps by which a cell progresses through anaphase of meiosis II; analogous to mitotic anaphase. [GOC:dph, GOC:mah]
meiotic metaphase II definition: A cell cycle process comprising the steps by which a cell progresses through metaphase of meiosis II; analogous to mitotic metaphase. [GOC:dph, GOC:mah]
meiotic prophase II definition: A cell cycle process comprising the steps by which a cell progresses through prophase of meiosis II; analogous to mitotic prophase. [GOC:dph, GOC:mah]
cell cycle switching, mitotic to meiotic cell cycle definition: The process by which a cell switches cell cycle mode from mitotic to meiotic division. [GOC:ai]
meiotic chromosome definition: OBSOLETE. A chromosome involved in the process of meiosis. [GOC:ai]
meiotic cohesin complex definition: A cohesin complex that mediates sister chromatid cohesion during meiosis; has a subunit composition distinct from that of the mitotic cohesin complex. [GOC:mah, PMID:12750522]
meiotic chromosome condensation definition: Compaction of chromatin structure prior to meiosis in eukaryotic cells. [PMID:10072401]
regulation of transcription, meiotic definition: Any process that modulates the frequency, rate or extent of transcription during meiosis. [GOC:go_curators]
negative regulation of transcription, meiotic definition: Any process that stops, prevents or reduces the frequency, rate or extent of transcription during meiosis. [GOC:ai]
meiotic nuclear envelope disassembly definition: The cell cycle process whereby the controlled breakdown of the nuclear envelope during meiotic cell division occurs. [GOC:bf]
meiotic sister chromatid cohesion definition: The cell cycle process whereby sister chromatids of a replicated chromosome are joined along the entire length of the chromosome during meiosis. [GOC:ai]
meiotic chromosome decondensation definition: The cell cycle process whereby chromosome structure is altered from the condensed form held during meiosis to the relaxed dispersed form held in resting cells. [GOC:ai]
regulation of meiotic cell cycle definition: Any process that modulates the rate or extent of progression through the meiotic cell cycle. [GOC:ai, GOC:dph, GOC:tb]
meiotic sister chromatid separation definition: The process by which sister chromatids are physically detached from each other during meiosis. [GOC:ai, PMID:14730319, PMID:16325576]
establishment of meiotic spindle localization definition: The cell cycle process whereby the directed movement of the meiotic spindle to a specific location in the cell occurs. [GOC:ai]
activation of anaphase-promoting complex during meiotic cell cycle definition: Any process that initiates the ubiquitin ligase activity of the anaphase-promoting complex during the meiotic cell cycle. [GOC:dph, GOC:mah, GOC:tb, PMID:10871297]
establishment of meiotic spindle orientation definition: Any process that set the alignment of meiotic spindle relative to other cellular structures. [GOC:ai]
meiotic chromosome separation definition: The process by which chromosomes are physically detached from each other during meiosis. [GOC:ai]
meiotic metaphase plate congression definition: The cell cycle process whereby chromosomes are aligned at the metaphase plate, a plane halfway between the poles of the meiotic spindle, during meiosis. [GOC:ai]
meiotic cell cycle definition: Progression through the phases of the meiotic cell cycle, in which canonically a cell replicates to produce four offspring with half the chromosomal content of the progenitor cell. [GOC:ai]
meiotic nuclear envelope reassembly definition: The cell cycle process whereby the reformation of the nuclear envelope during meiosis occurs. [GOC:ai]
meiotic recombination checkpoint definition: A checkpoint during late prophase I (pachytene) which prevents segregation of homologous chromosomes until recombination is completed and ensures proper distribution of the genetic material to the gametes. [PMID:14718568]
interphase of meiotic cell cycle definition: A cell cycle process comprising the steps by which a cell progresses through interphase, the stage of cell cycle between successive rounds of meiosis. Canonically, interphase is the stage of the cell cycle during which the biochemical and physiologic functions of the cell are performed and replication of chromatin occurs. [GOC:ai, GOC:dph, GOC:mah]
meiotic septin complex definition: A heterooligomeric septin complex that acts during meiotic cell division. [GOC:krc, PMID:16009555]
meiotic cell cycle checkpoint definition: A signal transduction-based surveillance mechanism that ensures accurate chromosome replication and segregation by preventing progression through a meiotic cell cycle until conditions are suitable for the cell to proceed to the next stage. [GOC:mah]
sexual sporulation definition: The formation of spores derived from the products of meiosis. [GOC:mah]
negative regulation of reciprocal meiotic recombination definition: Any process that decreases the frequency, rate or extent of recombination during meiosis. Reciprocal meiotic recombination is the cell cycle process whereby double strand breaks are formed and repaired through a double Holliday junction intermediate. [GOC:ai, GOC:dph, GOC:tb]
chromosome organization involved in meiosis definition: A process of chromosome organization that is involved in meiosis. [GOC:mah]
meiotic strand invasion involved in reciprocal meiotic recombination definition: The cell cycle process whereby double strand breaks are formed and repaired through a double Holliday junction intermediate resulting in meiotic recombination. Meiotic recombination is the cell cycle process whereby double strand breaks are formed and repaired through a double Holliday junction intermediate. [GOC:dph, GOC:tb]
meiotic strand invasion involved in meiotic gene conversion definition: The cell cycle process whereby double strand breaks are formed and repaired through a double Holliday junction intermediate resulting in meiotic recombination. [GOC:dph, GOC:tb]
meiotic mismatch repair involved in meiotic gene conversion definition: A system for the identification and correction of base-base mismatches, small insertion-deletion loops, and regions of heterology that are present in duplex DNA formed with strands from two recombining molecules resulting in meiotic gene conversion. Meiotic gene conversion is the cell cycle process whereby genetic information is transferred from one helix to another. [GOC:dph, GOC:tb]
meiotic mismatch repair involved in reciprocal meiotic recombination definition: A system for the identification and correction of base-base mismatches, small insertion-deletion loops, and regions of heterology that are present in duplex DNA formed with strands from two recombining molecules resulting in meiotic recombination. Meiotic recombination is the cell cycle process whereby double strand breaks are formed and repaired through a double Holliday junction intermediate. [GOC:dph, GOC:tb]
activation of reciprocal meiotic recombination definition: Any process that starts the inactive process of reciprocal meiotic recombination. Reciprocal meiotic recombination is the cell cycle process whereby double strand breaks are formed and repaired through a double Holliday junction intermediate. [GOC:dph, GOC:tb]