Mek1 Down Regulates Rad51 Activity during Yeast Meiosis by Phosphorylation of Hed1
PLoS Genetics, 2016 During meiosis, programmed double strand breaks (DSBs) are repaired preferentially between homologs to generate crossovers that promote proper chromosome segregation at Meiosis I.
Tracy L. Callender +16 more
semanticscholar +1 more source
A surge of late-occurring meiotic double-strand breaks rescues synapsis abnormalities in spermatocytes of mice with hypomorphic expression of SPO11 [PDF]
, 2015 Meiosis is the biological process that, after a cycle of DNA replication, halves the cellular chromosome complement, leading to the formation of haploid gametes.
Barchi, Marco +9 more
core +3 more sources
Advanced Science, EarlyView.This study demonstrates that somatic PIK3CA mutations suppress PPT1 expression via activation of the PI3K–AKT–c‐JUN axis. This reduction in PPT1 weakens its interaction with P300, thereby increasing palmitoylation at C1176 of P300 and protecting P300 from lysosomal degradation.
Hongrui Chen +7 more
wiley +1 more source
Dynamics and control of sister kinetochore behavior during the meiotic divisions in Drosophila spermatocytes. [PDF]
PLoS Genetics, 2018 Sister kinetochores are connected to the same spindle pole during meiosis I and to opposite poles during meiosis II. The molecular mechanisms controlling the distinct behavior of sister kinetochores during the two meiotic divisions are poorly understood.
Soumya Chaurasia, Christian F Lehner
doaj +1 more source
ALDH1A1 provides a source of meiosis-inducing retinoic acid in mouse fetal ovaries
Nature Communications, 2016 Substantial evidence exists that during fetal ovarian development in mammals, retinoic acid (RA) induces germ cells to express the pre-meiotic marker Stra8 and enter meiosis, and that these effects are prevented in the fetal testis by the RA-degrading ...
J. Bowles +5 more
semanticscholar +1 more source
Meiotic sex chromosome cohesion and autosomal synapsis are supported by Esco2.
, 2020 In mitotic cells, establishment of sister chromatid cohesion requires acetylation of the cohesin subunit SMC3 (acSMC3) by ESCO1 and/or ESCO2. Meiotic cohesin plays additional but poorly understood roles in the formation of chromosome axial elements (AEs)
Biswas, U. +6 more
core +1 more source
Methylation of the Gpat2 promoter regulates transient expression during mouse spermatogenesis [PDF]
, 2015 Spermatogenesis is a highly regulated process that involves both mitotic and meiotic divisions, as well as cellular differentiation to yield mature spermatozoa from undifferentiated germinal stem cells.
Cattaneo, Elizabeth Renee +6 more
core +2 more sources
Early evolutionary history of the seed
Biological Reviews, EarlyView.ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman +2 more
wiley +1 more source
Distinct Roles of Meiosis-Specific Cohesin Complexes in Mammalian Spermatogenesis
PLoS Genetics, 2016 Mammalian meiocytes feature four meiosis-specific cohesin proteins in addition to ubiquitous ones, but the roles of the individual cohesin complexes are incompletely understood.
U. Biswas +4 more
semanticscholar +1 more source
Синхронія за К. Г. Юнгом та сплутані квантові стани: кіт Шредінгера «блукає» між хромосомами [PDF]
, 2011 Один з найбільш перспективних напрямків дослідження феномену синхронії за К. Г. Юнгом розглядується з позиції останніх досягнень сучасної науки. Увага зосереджена, головним чином, на сплутаних квантових станах та пов'язаних феноменах – квантової ...
Лімарь, І. В.
core