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Research: Unexpectedly low recombination rates and presence of hotspots in termite genomes
- Turid Everitt,
- Tilman Rönneburg,
- Daniel Elsner,
- Anna Olsson,
- Yuanzhen Liu,
- Tuuli Larva,
- Judith Korb,
- and Matthew T. Webster
Genome Res. May 2025 35: 1124-1137; Published in Advance March 20, 2025, doi:10.1101/gr.279180.124
...by pathogens or parasites owing to diversification of immune genes (Fischer and Schmid-Hempel 2005). Recombination could also reduce variance in relatedness between nestmates, thereby reducing potential kin conflict within colonies (Sherman 1979; Templeton 1979; Wilfert et al. 2007). Additionally, it has been...
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Research: Lambdoid phages with abundant Chi recombination hotspots reflect diverse viral strategies for recombination-dependent growth
- Clarence Zheng,
- Sherwood R. Casjens,
- Alan R. Davidson,
- Susan K. Amundsen,
- and Gerald R. Smith
Genome Res. August 2025 35: 1767-1780; Published in Advance July 10, 2025, doi:10.1101/gr.280248.124
...://ftp.ncbi.nih.gov/s/) the DNA sequences of 237 lambdoid prophages and 38 lambdoid phages of E. coli and Salmonella for SAPs (homologs of λ Beta, P22 Erf, or HK620 Sak4) and anti-RecBCD proteins (homologs of λ Gam or P22 Abc2); they did not report analysis of Exo or SSB functions. They found that, of these 275 prophages...
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Research: Phylogenetic relatedness rather than aquatic habitat fosters horizontal transfer of transposable elements in animals
- Héloïse Muller,
- Rosina Savisaar,
- Jean Peccoud,
- Sylvain Charlat,
- and Clément Gilbert
Genome Res. September 2025 35: 2011-2022; Published in Advance August 8, 2025, doi:10.1101/gr.280432.125
...events as a function of divergence time in a Bayesian framework reveals a clear positive effect of phylogenetic relatedness on HTT rates in most of the animal species studied (162 out of 247). The effect is very pronounced: A typical species is expected to show 10 times more transfers with a species...
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Research: Pangenome analysis reveals families of ubiquitin-ligase adaptors as key genomic divergence drivers that lead to hybrid incompatibility
- Dongying Xie,
- Pohao Ye,
- Yiming Ma,
- and Zhongying Zhao
Genome Res. March 2026 36: 506-521; Published in Advance February 17, 2026, doi:10.1101/gr.280885.125
..., presumably via accelerated recombination during fbxn gene duplication, thereby reinforcing genetic divergence among populations and between species.An unusually conserved genomic region is identified surrounding Cni-neib-1Given the highly dynamic nature of fbxn genes across C. nigoni populations...
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Research: Dynamic evolution of satellite DNAs drastically differentiates the genomes of Tribolium sibling species
- Damira Veseljak,
- Evelin Despot-Slade,
- Marin Volarić,
- Lucija Horvat,
- Tanja Vojvoda Zeljko,
- Nevenka Meštrović,
- and Brankica Mravinac
Genome Res. November 2025 35: 2445-2460; Published in Advance September 16, 2025, doi:10.1101/gr.280516.125
..., and TCsat15 repeat units. The blue arrow represents the TfSat01 monomer, and the red and green arrows within the TfSat02 and TCsat15 units, respectively, indicate 166-bp segments homologous to the TfSat01 monomer sequence. The percent sequence similarities are indicated. (B) Genomic distribution of TfSat01...
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Research: MHC in newts illuminates the evolutionary dynamics of complex regions in giant genomes
- Wiesław Babik,
- Katarzyna Dudek,
- Gemma Palomar,
- Marzena Marszałek,
- Grzegorz Dubin,
- Maximina H. Yun,
- and Magdalena Migalska
Genome Res. February 2026 36: 303-317; Published in Advance January 12, 2026, doi:10.1101/gr.281127.125
...the formation of unfit MHC-I–APG recombinants. This theory, based on research in chicken and rat, assumes a single dominantly expressed MHC-I gene that coevolves with APGs (Kaufman 1999, 2015). Such a state has been suggested as ancestral for jawed vertebrates, with a “lucky” accident of a genomic rearrangement...
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Resource: High-quality assembly of the Chinese white truffle genome and recalibrated divergence time estimate provide insight into the evolutionary dynamics of Tuberaceae
- Jacopo Martelossi,
- Jacopo Vujovic,
- Yue Huang,
- Alessia Tatti,
- Kaiwei Xu,
- Federico Puliga,
- Yuanxue Chen,
- Omar Rota Stabelli,
- Fabrizio Ghiselli,
- Xiaoping Zhang,
- and Alessandra Zambonelli
Genome Res. November 2025 35: 2601-2616; Published in Advance August 21, 2025, doi:10.1101/gr.280368.124
...insertions that almost perfectly match LTR regions of their parent consensus sequence, resembling solo-LTR elements that arise from nonallelic homologous recombination (NAHR) between the two flanking LTRs (Kent et al. 2017).45S rDNA genes are organized as a single tandem array with only one diverging locus...
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Research: Extreme heterochiasmy and high rates of sex-reversed recombination result in large yet homomorphic sex chromosomes in the Emei moustache toad
- Siyu Xie,
- Jun Li,
- Wanyan Chen,
- Lydia J.M. Fong,
- Chunhua Huang,
- Yan Feng,
- Qingbo Ai,
- Mian Zhao,
- Judith E. Mank,
- and Hua Wu
Genome Res. June 2025 35: 1325-1336; Published in Advance April 24, 2025, doi:10.1101/gr.280161.124
...al. 2021), with chromosomes only paired at their terminal region during male meiosis (Morescalchi and Galgano 1973; Miura 1994), similar to what we observed in L. boringii. Genomic regions with sex-specific recombination rates may be important in sex chromosome divergence (Wright et al. 2016...
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Research: Multiple paralogs and recombination mechanisms contribute to the high incidence of 22q11.2 deletion syndrome
- Lisanne Vervoort,
- Nicolas Dierckxsens,
- Marta Sousa Santos,
- Senne Meynants,
- Erika Souche,
- Ruben Cools,
- Tracy Heung,
- Koen Devriendt,
- Hilde Peeters,
- Donna M. McDonald-McGinn,
- Ann Swillen,
- Jeroen Breckpot,
- Beverly S. Emanuel,
- Hilde Van Esch,
- Anne S. Bassett,
- and Joris R. Vermeesch
Genome Res. April 2025 35: 786-797; Published in Advance November 13, 2024, doi:10.1101/gr.279331.124
...-read sequencing cannot resolve the complex segmental duplications (SDs) to provide direct confirmation of the hypothesis that the rearrangements are caused by nonallelic homologous recombination between the low copy repeats on Chromosome 22 (LCR22s). To enable haplotype-specific assembly and rearrangement mapping...
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Method: Secure phasing of private genomes in a trusted execution environment with TX-Phase
- Natnatee Dokmai,
- Kaiyuan Zhu,
- S. Cenk Sahinalp,
- and Hyunghoon Cho
Genome Res. December 2025 35: 2626-2636; Published in Advance November 12, 2025, doi:10.1101/gr.280558.125
...the block. Nodes at each position are lexicographically sorted by their “reverse prefix” (i.e., the suffix at reverse genomic positions), referred to as the positional prefix order in PBWT. Divergences, which capture the LCS between adjacent haplotypes in the positional prefix order, are maintained between...
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