Different Frequency in the Recovery of Crossover Products from Male and Female Gametes of Plants Hypoploid for B-a Translocations in Maize.

abstract：:Loss of heterozygosity (LOH) can be a driving force in the evolution of mitotic/somatic diploid cells, and cellular changes that increase the rate of LOH have been proposed to facilitate this process. In the yeast Saccharomyces cerevisiae, spontaneous LOH occurs by a number of mechanisms including chromosome loss and ...

journal_title：Genetics

authors： Andersen MP,Nelson ZW,Hetrick ED,Gottschling DE

更新日期：2008-07-01 00:00:00

abstract：:To identify genes involved in stress resistance and heat hardening, replicate lines of Drosophila melanogaster were selected for increased resistance to knockdown by a 39 degrees heat stress. Two selective regimes were used, one with and one without prior hardening. Mean knockdown times were increased from approximate...

journal_title：Genetics

authors： McColl G,Hoffmann AA,McKechnie SW

更新日期：1996-08-01 00:00:00

abstract：:The distribution of the number of HLA haplotypes shared by sibs affected with the same HLA-linked disease can be used to obtain information on the genetics of the disease. Since the inception of the use of sib-pair methods for the analysis of the HLA-associated diseases, the question has been raised of how to include ...

journal_title：Genetics

authors： Motro U,Thomson G

更新日期：1985-07-01 00:00:00

abstract：:The heat-shock response is a programmed change in gene expression carried out by cells in response to environmental stress, such as heat. This response is universal and is characterized by the synthesis of a small group of conserved protein chaperones. In Drosophila melanogaster the Hsp70 chaperone dominates the profi...

journal_title：Genetics

authors： Gong WJ,Golic KG

更新日期：2006-01-01 00:00:00

abstract：:Cytoplasmic male sterility (CMS), the maternally inherited failure to produce functional pollen, has been used in the breeding of sugar beet (Beta vulgaris ssp. vulgaris). At least three different sources of CMS can be distinguished from one another as well as from normal fertile cytoplasm by polymorphisms in their mi...

journal_title：Genetics

authors： Nishizawa S,Mikami T,Kubo T

更新日期：2007-11-01 00:00:00

abstract：:Maintenance of proper neuronal excitability is vital to nervous system function and normal behavior. A subset of Drosophila mutants that exhibit altered behavior also exhibit defective motor neuron excitability, which can be monitored with electrophysiological methods. One such mutant is the P-element insertion mutant...

journal_title：Genetics

authors： Schweers BA,Walters KJ,Stern M

更新日期：2002-07-01 00:00:00

abstract：:The Sh2/A1 orthologous region of maize, rice, and sorghum contains five genes in the order Sh2, X1, X2, and two A1 homologs in tandem duplication. The Sh2 and A1 homologs are separated by approximately 20 kb in rice and sorghum and by approximately 140 kb in maize. We analyzed the fate of the Sh2/A1 region in large-ge...

journal_title：Genetics

authors： Li W,Gill BS

更新日期：2002-03-01 00:00:00

abstract：:In fission yeast, regulation of p34cdc2 plays an important role in the checkpoint coupling mitosis to completion of DNA replication. The cdc2 mutations cdc2-3w (C67Y) and cdc2-4w (C67F) abolish checkpoint control without seriously affecting normal cell proliferation. However the molecular basis of this phenotype is no...

journal_title：Genetics

authors： Basi G,Enoch T

更新日期：1996-12-01 00:00:00

abstract：:Microsatellite markers are extensively used to evaluate genetic diversity in natural or experimental evolving populations. Their high degree of polymorphism reflects their high mutation rates. Estimates of the mutation rates are therefore necessary when characterizing diversity in populations. As a complement to the c...

journal_title：Genetics

authors： Raquin AL,Depaulis F,Lambert A,Galic N,Brabant P,Goldringer I

更新日期：2008-08-01 00:00:00

abstract：:In vertebrates, mitotic and meiotic M phase is facilitated by the kinase Greatwall (Gwl), which phosphorylates a conserved sequence in the effector Endosulfine (Endos). Phosphorylated Endos inactivates the phosphatase PP2A/B55 to stabilize M-phase-specific phosphorylations added to many proteins by cyclin-dependent ki...

journal_title：Genetics

authors： Kim MY,Bucciarelli E,Morton DG,Williams BC,Blake-Hodek K,Pellacani C,Von Stetina JR,Hu X,Somma MP,Drummond-Barbosa D,Goldberg ML

更新日期：2012-08-01 00:00:00

abstract：:In Caenorhabditis elegans embryos, specification of the germ lineage depends on PIE-1, a maternal protein that blocks mRNA transcription in germline blastomeres. Studies in mammalian cell culture have suggested that PIE-1 inhibits P-TEFb, a kinase that phosphorylates serine 2 in the carboxyl-terminal domain (CTD) repe...

journal_title：Genetics

authors： Ghosh D,Seydoux G

更新日期：2008-01-01 00:00:00

abstract：:For multiallelic loci, standard measures of linkage disequilibrium provide an incomplete description of the correlation of variation at two loci, especially when there are different numbers of alleles at the two loci. We have developed a complementary pair of conditional asymmetric linkage disequilibrium (ALD) measure...

journal_title：Genetics

authors： Thomson G,Single RM

更新日期：2014-09-01 00:00:00

abstract：:Haploid Saccharomyces can change mating type through HO-endonuclease cleavage of an expressor locus, MAT, followed by gene conversion using one of two repository loci, HML or HMR, as donor. The mating type of a cell dictates which repository locus is used as donor, with a cells using HML and alpha cells using HMR. Thi...

journal_title：Genetics

authors： Houston P,Simon PJ,Broach JR

更新日期：2004-03-01 00:00:00

abstract：:The endoplasmic reticulum (ER) is an extensive organelle in neurons with important roles at synapses including the regulation of cytosolic Ca2+, neurotransmission, lipid metabolism, and membrane trafficking. Despite intriguing evidence for these crucial functions, how the presynaptic ER influences synaptic physiology ...

journal_title：Genetics

authors： Kikuma K,Li X,Kim D,Sutter D,Dickman DK

更新日期：2017-11-01 00:00:00

abstract：:In Drosophila melanogaster, the female sexual development of the soma and the germline requires the activity of the gene Sxl. The somatic cells need the function of the gene fl(2)d to follow the female developmental pathway, due to its involvement in the female-specific splicing of Sxl RNA. Here we report the analysis...

journal_title：Genetics

authors： Granadino B,San Juán A,Santamaria P,Sánchez L

更新日期：1992-03-01 00:00:00

abstract：:Rp1 is a complex rust resistance locus of maize. The HRp1-D haplotype is composed of Rp1-D and eight paralogues, seven of which also code for predicted nucleotide binding site-leucine rich repeat (NBS-LRR) proteins similar to the Rp1-D gene. The paralogues are polymorphic (DNA identities 91-97%), especially in the C-t...

journal_title：Genetics

authors： Sun Q,Collins NC,Ayliffe M,Smith SM,Drake J,Pryor T,Hulbert SH

更新日期：2001-05-01 00:00:00

abstract：:Adaptation in diploids is predicted to proceed via mutations that are at least partially dominant in fitness. Recently, we argued that many adaptive mutations might also be commonly overdominant in fitness. Natural (directional) selection acting on overdominant mutations should drive them into the population but then,...

journal_title：Genetics

authors： Sellis D,Kvitek DJ,Dunn B,Sherlock G,Petrov DA

更新日期：2016-07-01 00:00:00

abstract：:Selection of Gl-Sb coupling heterozygotes was carried out for more than one hundred generations commencing with six independent lines drawn from a common base population. Population sizes were eight, sixteen and forty-eight parents per generation. The effect of natural selection on recombination value was measured by ...

journal_title：Genetics

authors： Kidwell MG

更新日期：1972-03-01 00:00:00

abstract：:Transmission ratio distortion (TRD) is the departure from the expected genotypic frequencies under Mendelian inheritance. This departure can be due to multiple physiological mechanisms during gametogenesis, fertilization, fetal and embryonic development, and early neonatal life. Although a few TRD loci have been repor...

journal_title：Genetics

authors： Casellas J,Gularte RJ,Farber CR,Varona L,Mehrabian M,Schadt EE,Lusis AJ,Attie AD,Yandell BS,Medrano JF

更新日期：2012-05-01 00:00:00

abstract：:Genetic screens in Drosophila melanogaster and other organisms have been pursued to filter the genome for genetic functions important for memory formation. Such screens have employed primarily chemical or transposon-mediated mutagenesis and have identified numerous mutants including classical memory mutants, dunce and...

journal_title：Genetics

authors： Walkinshaw E,Gai Y,Farkas C,Richter D,Nicholas E,Keleman K,Davis RL

更新日期：2015-04-01 00:00:00

abstract：:An algorithm for detecting local clusters of homologous genes was applied to the genome of Caenorhabditis elegans. Clusters of two or more homologous genes are abundant, totaling 1391 clusters containing 4607 genes, over one-fifth of all genes in C. elegans. Cluster genes are distributed unevenly in the genome, with t...

journal_title：Genetics

authors： Thomas JH

更新日期：2006-01-01 00:00:00

abstract：:In the yeast Saccharomyces cerevisiae, rim1, 8, 9, or 13 mutations cause four phenotypes: poor growth at low temperature, altered colony morphology, inefficient sporulation due to reduced expression of the meiotic activator IME1, and, as shown here, defective invasive growth. In this report, we have determined the rel...

journal_title：Genetics

authors： Li W,Mitchell AP

更新日期：1997-01-01 00:00:00

abstract：:The Drosophila mei-S332 gene acts to maintain sister-chromatid cohesion before anaphase II of meiosis in both males and females. By isolating and analyzing seven new alleles and a deficiency uncovering the mei-S332 gene we have demonstrated that the onset of the requirement for mei-S332 is not until late anaphase I. A...

journal_title：Genetics

authors： Kerrebrock AW,Miyazaki WY,Birnby D,Orr-Weaver TL

更新日期：1992-04-01 00:00:00

abstract：:hunchback (hb) is a key regulatory gene in the early segmentation gene hierarchy of Drosophila. It codes for a transcription factor of the Cys2-His2 zinc finger type and shows two separate zinc finger domains in its coding region. hb forms a morphogenetic gradient in the middle of the embryo that is required for setti...

journal_title：Genetics

authors： Hülskamp M,Lukowitz W,Beermann A,Glaser G,Tautz D

更新日期：1994-09-01 00:00:00

abstract：:The SMK1 mitogen-activated protein kinase is required for spore morphogenesis in Saccharomyces cerevisiae. In contrast to the multiple aberrant spore wall assembly patterns seen even within a single smk1 null ascus, different smk1 missense mutants block in a coordinated fashion at intermediate stages. One smk1 mutant ...

journal_title：Genetics

authors： Wagner M,Briza P,Pierce M,Winter E

更新日期：1999-04-01 00:00:00

abstract：:Transposons can impact the host genome by altering gene expression and participating in chromosome rearrangements. Therefore, organisms evolved different ways to minimize the level of transposition. In Saccharomyces cerevisiae and its close relative S. paradoxus, Ty1 copy number control (CNC) is mediated by the self-e...

journal_title：Genetics

authors： Ahn HW,Tucker JM,Arribere JA,Garfinkel DJ

更新日期：2017-12-01 00:00:00

abstract：:Classical studies have established that, during meiosis, the X and Y chromosomes of the model dioecious plant Silene latifolia pair over a region at the ends of their q arms. We used fluorescence in situ hybridization of two molecular markers to demonstrate that this widely accepted model is incorrect. From these data...

journal_title：Genetics

authors： Lengerova M,Moore RC,Grant SR,Vyskot B

更新日期：2003-10-01 00:00:00

abstract：:Mapping markers from linkage data continues to be a task performed in many genetic epidemiological studies. Data collected in a study may be used to refine published map estimates and a study may use markers that do not appear in any published map. Furthermore, inaccuracies in meiotic maps can seriously bias linkage f...

journal_title：Genetics

authors： George AW

更新日期：2005-10-01 00:00:00

abstract：:Transvection is the phenomenon where a transcriptional enhancer activates a promoter located on the homologous chromosome. It has been amply documented in Drosophila where homologs are closely paired in most, if not all, somatic nuclei, but it has been known to rarely occur in mammals as well. We have taken advantage ...

journal_title：Genetics

authors： Piwko P,Vitsaki I,Livadaras I,Delidakis C

更新日期：2019-06-01 00:00:00

abstract：:Sir2 is a highly conserved NAD+-dependent histone deacetylase that functions in heterochromatin formation and promotes replicative life span (RLS) in the budding yeast, Saccharomyces cerevisiae Within the yeast rDNA locus, Sir2 is required for efficient cohesin recruitment and maintaining the stability of the tandem a...

journal_title：Genetics

authors： Fine RD,Maqani N,Li M,Franck E,Smith JS

更新日期：2019-05-01 00:00:00