Results 1 to 10 of about 114,428 (218)

Rivers constrain female but not male dispersal and genetic structure in brown bears [PDF]

Scientific Reports
Understanding landscape barriers to connectivity is essential for studying wildlife population dynamics and developing conservation strategies that promote genetic exchange.
Robert Spitzer, Anita J. Norman, Michael Schneider, Ellinor Sahlén, Göran Spong   +4 more
doaj   +2 more sources

Selection strategies for the development of maize introgression populations. [PDF]

PLoS ONE, 2014
Introgression libraries are valuable resources for QTL detection and breeding, but their development is costly and time-consuming. Selection strategies for the development of introgression populations with a limited number of individuals and high ...
Eva Herzog, Karen Christin Falke, Thomas Presterl, Daniela Scheuermann, Milena Ouzunova, Matthias Frisch   +5 more
doaj   +1 more source

Exo1 protects DNA nicks from ligation to promote crossover formation during meiosis.

PLoS Biology, 2023
In most sexually reproducing organisms crossing over between chromosome homologs during meiosis is essential to produce haploid gametes. Most crossovers that form in meiosis in budding yeast result from the biased resolution of double Holliday junction ...
Michael Gioia, Lisette Payero, Sagar Salim, Ghanim Fajish V, Amamah F Farnaz, Gianno Pannafino, Jun Jie Chen, V P Ajith, Sherikat Momoh, Michelle Scotland, Vandana Raghavan, Carol M Manhart, Akira Shinohara, K T Nishant, Eric Alani   +14 more
doaj   +1 more source

Senataxin plays an essential role with DNA damage response proteins in meiotic recombination and gene silencing. [PDF]

PLoS Genetics, 2013
Senataxin, mutated in the human genetic disorder ataxia with oculomotor apraxia type 2 (AOA2), plays an important role in maintaining genome integrity by coordination of transcription, DNA replication, and the DNA damage response.
Olivier J Becherel, Abrey J Yeo, Alissa Stellati, Evelyn Y H Heng, John Luff, Amila M Suraweera, Rick Woods, Jean Fleming, Dianne Carrie, Kristine McKinney, Xiaoling Xu, Chuxia Deng, Martin F Lavin   +12 more
doaj   +1 more source

Widespread gene conversion in centromere cores. [PDF]

PLoS Biology, 2010
Centromeres are the most dynamic regions of the genome, yet they are typified by little or no crossing over, making it difficult to explain the origin of this diversity.
Jinghua Shi, Sarah E Wolf, John M Burke, Gernot G Presting, Jeffrey Ross-Ibarra, R Kelly Dawe   +5 more
doaj   +1 more source

Genetic variability in soybean with resistance to cyst nematode and powdery mildew: impact of multi-parent crosses on recombination and genetic diversity [PDF]

Brazilian Journal of Biology
The objective of this study was to analyze the genetic variability generated from two-way, four-way, and eight-way hybridizations in soybean, derived from parental lines contrasting in resistance to cyst nematode and powdery mildew.
F. R. S. Muniz, J. S. Souza, A. C. R. Moitinho, I. M. B. Torneli, S. H. Unêda-Trevisoli, T. Pfeiffer, A. O. Di Mauro   +6 more
doaj   +1 more source

Meiotic recombination in Arabidopsis is catalysed by DMC1, with RAD51 playing a supporting role. [PDF]

PLoS Genetics, 2013
Recombination establishes the chiasmata that physically link pairs of homologous chromosomes in meiosis, ensuring their balanced segregation at the first meiotic division and generating genetic variation.
Olivier Da Ines, Fabienne Degroote, Chantal Goubely, Simon Amiard, Maria E Gallego, Charles I White   +5 more
doaj   +1 more source

Genetic Background, Maternal Age, and Interaction Effects Mediate Rates of Crossing Over in Drosophila melanogaster Females

G3: Genes, Genomes, Genetics, 2016
Meiotic recombination is a genetic process that is critical for proper chromosome segregation in many organisms. Despite being fundamental for organismal fitness, rates of crossing over vary greatly between taxa.
Chad M. Hunter, Matthew C. Robinson, David L. Aylor, Nadia D. Singh   +3 more
doaj   +1 more source

Positive Selection and Functional Divergence at Meiosis Genes That Mediate Crossing Over Across the Drosophila Phylogeny

G3: Genes, Genomes, Genetics, 2019
Meiotic crossing over ensures proper segregation of homologous chromosomes and generates genotypic diversity. Despite these functions, little is known about the genetic factors and population genetic forces involved in the evolution of recombination rate
Cara L. Brand, Lori Wright, Daven C. Presgraves   +2 more
doaj   +1 more source

Natural genetic transformation generates a population of merodiploids in Streptococcus pneumoniae. [PDF]

PLoS Genetics, 2013
Partial duplication of genetic material is prevalent in eukaryotes and provides potential for evolution of new traits. Prokaryotes, which are generally haploid in nature, can evolve new genes by partial chromosome duplication, known as merodiploidy ...
Calum Johnston, Stéphanie Caymaris, Aldert Zomer, Hester J Bootsma, Marc Prudhomme, Chantal Granadel, Peter W M Hermans, Patrice Polard, Bernard Martin, Jean-Pierre Claverys   +9 more
doaj   +1 more source