MeiosisLate pachytene stageProphaseChromosomesSpermatocytesChromosomeHybridizationPredominantlyGermChromatinTranscriptsMRNAsTranscriptomeGeneticTargetsSpeciesNuclearDescribeInsightsStudyCellsDevelopmentZygotene-pachyteneTranscriptional elongationHaploidMeioticSpermatogoniaEmbryonicNuclear organizationSpermatogenesisNucleusComplexWorkCellCycleDirectly
Meiosis7
- The lily is a favored organism for the cytological examination of meiosis since the chromosomes are large and each morphological stage of meiosis can be easily identified microscopically. (wikipedia.org)
- presented the evidence for a common pattern of DNA nicking and repair synthesis in male meiotic cells of lilies and rodents during the zygotene-pachytene stages of meiosis when crossing over was presumed to occur. (wikipedia.org)
- A detailed description of chromatin folding in the pachytene stage of meiosis serves as a model for exploring this functionality, showing the apparent interplay between structure, function, and epigenetic regulation. (osu.cz)
- Recombination and separation of homologous chromosomes occurs in pachytene spermatocytes during meiosis I and results in the formation of secondary spermatocytes. (jci.org)
- Inside the meiosis, the spHtting of one's chromosomes, and therefore happens in new interphase in advance of a mitotic department, doesn't occurs right up until pachytene in the event that chromosomes are generally related inside the pairs. (towelium.com)
- In some species E.g. maize, amphibia etc. chromosomes during the first prophase of meiosis, more particularly during pachytene, show small bead like structure called chromomere . (microbiologynotes.org)
- We have previously detected predominantly non-TE piRNAs in adult chicken testes 17 , however, it was unclear whether these piRNAs were expressed during the pachytene stage of meiosis. (gokcumenlab.org)
Late pachytene stage2
- Histology evaluation: Arrest of spermatogenesis during late pachytene stage of meiotic prophase (see 1), some seminiferous tubules have only spermatogonia and Sertoli cells present (see 1), some germ cells appear apoptotic (see 2). (jax.org)
- Phenotyping of Zfp541 KO spermatocytes demonstrated XY chromosome asynapsis and recurrent DNA damage in the late pachytene stage, leading to apoptosis. (nbrp.jp)
Prophase6
- Our analysis of anther transcriptome modulations by two distinct am1 alleles, am1-489 and am1-praI , redefines the role of AM1 as a modulator of expression of a subset of meiotic genes, important for meiotic progression and provided stage-specific insights into the genetic networks associated with meiotic entry and early prophase I progression. (biomedcentral.com)
- Specifically, YTHDC2 deficiency causes microtubule-dependent telomere clustering and apoptosis at the pachytene stage of prophase I. Depletion of YTHDC2 results in a massively dysregulated transcriptome in pachytene cells, with a tendency toward upregulation of genes normally expressed in mitotic germ cells and downregulation of meiotic transcripts. (bvsalud.org)
- Histology evaluation: Arrest of spermatogenesis predominantly at pachytene stage of meiotic prophase or meiotic division stage (see 1), some germ cells appear apoptotic (see 2). (jax.org)
- Histology evaluation: Arrest of spermatogenesis during pachytene stage of meiotic prophase, some tubules are greatly depleted of germ cells (see 1). (jax.org)
- Keep in mind that the chromosomes is actually twice within its earliest physical appearance in the mitosis, but not on the first (leptotene) stage of meiotic prophase. (towelium.com)
- It couples when you look at the zygotene, start to getting double (split) in the pachytene, consequently they are twice within the last amounts from meiotic prophase (diplotene and you can diakinesis). (towelium.com)
Chromosomes6
- The next stage took place after the development of genetics in the early 20th century, when it was appreciated that the set of chromosomes (the karyotype) was the carrier of the genes. (wikipedia.org)
- A Condensed History of Chromatin Research -- Investigating Chromatin Organisation Using Single Molecule Localisation Microscopy -- Structure, Function and Dynamics of Chromatin -- Periodic and Symmetric Organisation of Meiotic Chromosomes -- Conclusions -- Appendices. (osu.cz)
- 1985) described polytene chromosomes as giant chromosomes produced by changes in the mitotic cycle during the interphase stage. (scielo.br)
- The size of chromosomes, depends on the different stages of the cell division. (microbiologynotes.org)
- During interphase, chromosomes are not visible under light microscope because at this stage they are longest and thinnest, but in other phase chromosomes are visible due to progressive decrease in length and increase in thickness. (microbiologynotes.org)
- Morphology of chromosomes will be change at the stage of cell division, and metaphase chromosomes are foremost suitable for studies. (microbiologynotes.org)
Spermatocytes1
- We also detected stage-specific staining of CIWI protein in the cytosol of pachytene spermatocytes (Fig. 1b and Supplementary Fig. 1c ). (gokcumenlab.org)
Chromosome2
- Chromosome are the rod shape, dark stained bodies which is seen only at metaphase stage of mitosis. (microbiologynotes.org)
- Leptotene stage is the first step of meiotic division-I, which is also known as bouquet stage ,chromosome become gradually visible ,nuclear membrane initiates to disappear. (askfilo.com)
Hybridization1
- Cover: In situ hybridization of the vegetal region of an 8-cell stage Xenopus laevis embryo using a probe for Wnt11 mRNA, showing that Wnt11 mRNA is localized in dorsal vegetal blastomeres. (biologists.com)
Predominantly1
- These are predominantly stage-specific transcripts. (biomedcentral.com)
Germ1
- These results demonstrate the existence of pachytene piRNAs in chickens, suggesting a function of pachytene piRNAs during germ cell development shared by birds and mammals. (gokcumenlab.org)
Chromatin4
- This book sheds new light on the current state of knowledge concerning chromatin organization. (osu.cz)
- Gathering essential insights on chromatin architecture, the book offers students an introduction to microscopy and its application to chromatin organization, while also providing advanced readers with new ideas for future research. (osu.cz)
- In some species of Phaseolus and Vigna the polytenics are more clearly defined and, therefore, better suited to the study of this type of chromatin organization. (scielo.br)
- In such a modified nuclear cycle, the chromatin duplicates its DNA content during the G 1 and S stages, but, instead of passing to the G 2 stage, the nucleus initiates a new G 1 phase, thus starting a new cycle of chromatin duplication. (scielo.br)
Transcripts1
- Furthermore, altered transcripts in mutant pachytene cells encode microtubule network proteins. (bvsalud.org)
MRNAs1
- Pachytene piRNAs have been proposed to either regulate mRNAs 10 , 11 , 12 , 13 , 14 or stabilize PIWI proteins for a function that does not require piRNA-guided sequence specificity 15 . (gokcumenlab.org)
Transcriptome2
- At the 1.5-mm stage both mutants are aberrant cytologically, and show more drastic transcriptome changes. (biomedcentral.com)
- Our results demonstrate that YTHDC2 regulates the pachytene stage by perpetuating a meiotic transcriptome and preventing microtubule network changes that could lead to telomere clustering. (bvsalud.org)
Genetic1
- Our results indicate that genetic instability at pachytene piRNA loci, while producing certain pathogenic SVs, also protects genome integrity against TE mobilization by driving the formation of rapid-evolving piRNA sequences. (gokcumenlab.org)
Targets1
- While most pachytene piRNAs lack obvious targets, neither the copy numbers nor nucleotide sequences of pachytene piRNA loci are conserved 5 , 6 , 7 , and many of them are not found in syntenic regions even in closely related mammals 8 , 9 . (gokcumenlab.org)
Species1
- The stage was set for ideas about the transmutability of species, the heritability of physical traits and Darwin's theory of the origin of species [ 1 ]. (biomedcentral.com)
Nuclear1
- during pachytene, telomeres disperse, yet remain attached to the nuclear envelope and are subject to actin-dependent pulling forces ( Z ickler and K leckner 1998 ). (biorxiv.org)
Describe1
- Lastly, the book discusses possible new avenues of innovation to describe chromatin's organization and functions. (osu.cz)
Insights1
- To gain more insights into the roles of AM1 in the transcriptional pre-meiotic and meiotic programs, we report here an in depth analysis of gene expression alterations in carefully staged anthers at 1 mm (meiotic entry) and 1.5 mm (L/Z) caused by each of these am1 alleles. (biomedcentral.com)
Study2
- Our specialty was pioneered by scientists who developed the compound microscope to study the cellular organisation of the living world. (biomedcentral.com)
- Such proposed functions are difficult to reconcile with pachytene piRNAs' rapid evolution, and this rapid evolution and their redundant distribution across multiple loci on the genome also complicates their functional study. (gokcumenlab.org)
Cells2
- However, YTHDC2 is highly expressed in pachytene cells. (bvsalud.org)
- Cells of all organisms have close similarity in origin, structure, molecular organization and biological activities. (pw.live)
Development1
- The plant is, however, a weak competitor to weeds, due to its slow growth rate and narrow leaf area development at primary stages of the crop growth and establishing. (jabonline.in)
Zygotene-pachytene1
- The second model postulates that the most likely target cell for transformation is the zygotene-pachytene spermatocyte. (medscape.com)
Transcriptional elongation2
- The spermatids metamorphose into mature spermatozoa during spermiogenesis which is dependent on nuclear licensing factor(s) required for transcriptional elongation at pachytene piRNA loci. (nih.gov)
- Hyperphosphorylation of the Pol II CTD is considered a hallmark of 'active Pol II' that has progressed past the initiation stage and begun transcriptional elongation [ 3 ]. (biomedcentral.com)
Haploid2
- H2A.B expression is spatially and temporally regulated during spermatogenesis being most highly expressed in the haploid round spermatid stage. (biomedcentral.com)
- However, in basidiomycete fungi (34% of described species), the predominant life stage is generally dikaryotic, with two different haploid nuclei maintained within each individual 3 . (biorxiv.org)
Meiotic1
- Easy access to the early stages of oogenesis, coupled with available genetic and molecular genetic tools, makes Drosophila an excellent model for studies on meiotic progression and oocyte development. (nih.gov)
Spermatogonia1
- Type Ad spermatogonia appeared through all stages. (ksdb.org)
Embryonic1
- When genes encoding members of the complex are ablated, embryos do not progress beyond the 2-cell stage, do not activate the embryonic genome and are uniformly infertile. (nih.gov)
Nuclear organization2
- To understand the major principles of nuclear organization, Irina Solovei's group studied spatial arrangements of the eu- and heterochromatic chromosomal subregions. (epigenie.com)
- Here, we report the first mouse knockout of this histone variant and its effects on fertility, nuclear organization, and gene expression. (biomedcentral.com)
Spermatogenesis1
- Thus, this study examines the stages of Clethrionomys rufocanus spermatogenesis and investigates its difference with other rodents. (ksdb.org)
Nucleus2
- To understand the three-dimensional organization of genes inside the cell nucleus, he analysed molecular mechanisms using high-throughput imaging position mapping (HIPMap). (epigenie.com)
- Prevention of Dppa3 cleavage by gene editing prevents translocation from the nucleus to the cytoplasm and adversely affects cleavage stage development. (nih.gov)
Complex2
Work1
- For a long time, I've been arguing that one sense of "self-organization" in the work of Kauffman (1993) and others is an effect of findability that is related to the explanation for King's codon argument, arising from biases in the introduction process (Stoltzfus, 2006, 2012). (molevol.org)
Cell1
- Put the Slide on the Stage and Force Arrestment 10 x and look in Eyepece and find the Cell if not Show Clear than Change the Lense Size 40x and using Find Know and Search the Cell. (digitalhybridedu.com)
Cycle1
- The seminiferous epithelium cycle was divided into 8 stages. (ksdb.org)
Directly1
- MRE 8.11 calls this "the obvious explanation for the apparent magic of Kauffman's 'self-organization'", and suggests how to demonstrate this directly by implementing an artificial mutation operator that samples equally by phenotype. (molevol.org)