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The cell cycle process whereby a cell progresses from meiotic prophase to metaphase I. The reformation of the nuclear envelope during meiosis I. A cell cycle process comprising the steps by which a cell progresses through telophase of meiosis I; analogous to mitotic telophase. A cell cycle process comprising the steps by which a cell progresses through anaphase of meiosis I; analogous to mitotic anaphase. The cell cycle process whereby sister chromatids of a replicated chromosome are joined along the entire length of the chromosome during meiosis I. A cell cycle process comprising the steps by which a cell progresses through metaphase of meiosis I; analogous to mitotic metaphase. 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. The controlled breakdown of the nuclear envelope during the first division of meiosis. 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. The first division of meiosis in which homologous chromosomes are paired and segregated from each other, occurring in the constitutive absence of chiasmata. The cell cycle process whereby the nucleoprotein complex (composed of the broken single-strand DNA and the recombinase) searches and identifies a region of homology in intact duplex DNA. The broken single-strand DNA displaces the like strand and forms Watson-Crick base pairs with its complement, forming a duplex in which each strand is from one of the two recombining DNA molecules. This occurs during meiosis. A cellular process that is involved in the progression of biochemical and morphological phases and events that occur in a cell during successive cell replication or nuclear replication events. A cell cycle process comprising the steps by which a cell progresses through M phase, the part of the meiotic cell cycle during which meiosis takes place. During meiosis, the aggregation, arrangement and bonding together of strand exchange proteins (recombinases) to form higher order oligomers on single-stranded DNA. A cell cycle process comprising the steps by which a cell progresses through one of the biochemical and morphological phases and events that occur during successive cell replication or nuclear replication events. The cell cycle process whereby the side by side pairing and physical juxtaposition of homologous chromosomes is created at the metaphase plate. A cell cycle process comprising the steps by which a cell progresses through prophase of meiosis I; divided into several stages. A cell cycle process comprising the steps by which a cell progresses through the first phase of meiosis, in which cells divide and homologous chromosomes are paired and segregated from each other, producing two daughter cells. A cell cycle process comprising the steps by which a cell progresses through the nuclear division phase of a meiotic cell cycle, the specialized nuclear and cell division in which a single diploid cell undergoes two nuclear divisions following a single round of DNA replication in order to produce four daughter cells that contain half the number of chromosomes as the diploid cell. Meiotic division occurs during the formation of gametes from diploid organisms and at the beginning of haplophase in those organisms that alternate between diploid and haploid generations. Any process that modulates the rate, frequency, or extent of meiosis I, a cell cycle process comprising the steps by which a cell progresses through the first phase of meiosis, in which cells divide and homologous chromosomes are paired and segregated from each other, producing two daughter cells. 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. During meiosis, the synthesis of DNA proceeding from the broken 3' single-strand DNA end that uses the homologous intact duplex as the template. During meiosis, the formation of a stable duplex DNA that contains one strand from each of the two recombining DNA molecules. The cell cycle process whereby replicated homologous chromosomes are organized and then physically separated and apportioned to two sets during the first division of the meiotic cell cycle. Each replicated chromosome, composed of two sister chromatids, aligns at the cell equator, paired with its homologous partner; this pairing off, referred to as synapsis, permits genetic recombination. One homolog (both sister chromatids) of each morphologic type goes into each of the resulting chromosome sets. The cell cycle process whereby the broken 3' single-strand DNA molecule that formed heteroduplex DNA with its complement in an intact duplex DNA is rejected. The Watson-Crick base pairing in the original duplex is restored. The rejected 3' single-strand DNA molecule reanneals with its original complement to reform two intact duplex molecules. This occurs during meiosis. The cell cycle process whereby double-strand breaks are generated at defined hotspots throughout the genome during meiosis I. This results in the initiation of meiotic recombination. The cell cycle process whereby sister chromatid arms are physically detached from each other during meiosis. Any process that increases the rate, frequency, or extent of meiosis I, a cell cycle process comprising the steps by which a cell progresses through the first phase of meiosis, in which cells divide and homologous chromosomes are paired and segregated from each other, producing two daughter cells.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: meiosis I
Acc: GO:0007127
Aspect: Biological Process
Desc: A cell cycle process comprising the steps by which a cell progresses through the first phase of meiosis, in which cells divide and homologous chromosomes are paired and segregated from each other, producing two daughter cells.
Proteins in PDR annotated with:
   This term: 18 [Search]
   Term or descendants: 377 [Search]


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INTERACTIVE GO GRAPH

GO:0007127 - meiosis I (interactive image map)
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