During prophase of meiosis I a structure known as the synaptonemal complex (SC) is formed between homologous chromosomes. The SC is comprised of proteins that assemble along the axes of each pair of homologous chromosomes forming lateral elements which are interconnected by transverse filaments forming...
1a), consistent with a role for this gene in the retinoic acid signaling that prepares SG to differentiate and enter meiosis10,11. Likewise, Spo11, which is essential in SC for the initiation of meiosis and double-strand break formation12, exhibits the highest RNA expression in SC (Fig. 1...
The synaptonemal complex (SC) is a proteinaceous structure formed between pairs of homologous chromosomes during prophase I of meiosis. The proper assembly of axial elements (AEs), lateral components of the SC, during meiosis in the yeast, Saccharomyces cerevisiae, is essential for wild-type levels...
Diakinesis isthe last stage of meiosis prophase-1(a five-stage process). Diakinesis stage is characterized by chiasmata terminalization. After diakinesis, the dividing cell enters metaphase. At this stage, bivalents distribute them evenly in the nucleus. The nuclear membrane breaks down and the...
In addition, the location and activity of ASY1 orthologues during meiosis in maize and rye has been investigated using the At ASY1 antibody in studies of mutants displaying abnormal chromosomal morphology during prophase I, which also supports results obtained from Arabidopsis and rice [26, 27]. ...
When staining methods regarded as selective for RNA are used, fibrillar structures appear in the nucleus during prophase 1. Three possible similarities with meiosis in oocytes of zoological material are discussed: (1) parallels between the diffuse stage and the lampbrush state of chromosomes, (2) ...
During meiotic prophase in male mammals, the sex chromosomes are transcriptionally inactivated and form a condensed chromatin domain known as the sex body. It is not known how the assumption of this chromatin configuration is determined and regulated. We used various genetic models to test whether ...
When staining methods regarded as selective for RNA are used, fibrillar structures appear in the nucleus during prophase 1. Three possible similarities with meiosis in oocytes of zoological material are discussed: (1) parallels between the diffuse stage and the lampbrush state of chromosomes, (2) ...
Tsutsumi1, Hiroe Kowa-Sugiyama1, Hasbaira Bolor1, Hiroshi Kogo1, Hidehito Inagaki1, Tamae Ohye1, Kouji Yamada1, Mariko Taniguchi-Ikeda2, Tatsushi Toda2 and Hiroki Kurahashi1 The events that take place during the prophase of meiosis I are essential for the correct segregation of homologous ...
In yeast, HOP1 is essential for formation of the SC, and localises along chromosome axes during prophase I. Homologues in Arabidopsis (AtASY1), Brassica (BoASY1) and rice (OsPAIR2) have been isolated through analysis of mutants that display decreased fertility due to severely reduced synapsis ...