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Research: Regional epigenetic differentiation of the Z Chromosome between sexes in a female heterogametic system
- Dan Sun,
- Donna L. Maney,
- Thomas S. Layman,
- Paramita Chatterjee,
- and Soojin V. Yi
Genome Res. October 2019 29: 1673-1684; Published in Advance September 23, 2019, doi:10.1101/gr.248641.119
...in female heterogametic systems.Chromosomal sex determination is widespread in animals, having originated multiple times in different lineages (for reviews, see Bachtrog et al. 2014; Graves 2016). For example, birds have a female-heterogametic sex chromosome system in which males are homozygous for the Z...
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Research: Transposon wave remodeled the epigenomic landscape in the rapid evolution of X-Chromosome dosage compensation
- David C.H. Metzger,
- Imogen Porter,
- Brendan Mobley,
- Benjamin A. Sandkam,
- Lydia J.M. Fong,
- Andrew P. Anderson,
- and Judith E. Mank
Genome Res. November 2023 33: 1917-1931; Published in Advance November 21, 2023, doi:10.1101/gr.278127.123
...that dosage compensation efficiency is not affected by the proximity of genes to a YY1 binding. Moreover, the enrichment of male-biased hypomethylated regions on the P. picta sex chromosome is associated with genomic regions containing YY1 DNA binding motifs and not with regions containing gene promoters...
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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
...(Dai et al. 2024), among others.In contrast to the stable and heteromorphic sex chromosomes in many clades, homomorphic sex chromosomes predominate in some vertebrate groups, with ∼96% of amphibians and 90% of fishes exhibiting sex chromosomes that do not differ noticeably in size and shape (Eggert...
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Research: The origins and evolution of chromosomes, dosage compensation, and mechanisms underlying venom regulation in snakes
- Drew R. Schield,
- Daren C. Card,
- Nicole R. Hales,
- Blair W. Perry,
- Giulia M. Pasquesi,
- Heath Blackmon,
- Richard H. Adams,
- Andrew B. Corbin,
- Cara F. Smith,
- Balan Ramesh,
- Jeffery P. Demuth,
- Esther Betrán,
- Marc Tollis,
- Jesse M. Meik,
- Stephen P. Mackessy,
- and Todd A. Castoe
Genome Res. April 2019 29: 590-601; Published in Advance March 21, 2019, doi:10.1101/gr.240952.118
...and Diamond 1998). Among squamates, snakes represent an enriched system for studying a number of extreme or unique biological features. For example, snakes are an emerging model system for studying sex chromosome evolution, given their lack of apparent global dosage compensation (Vicoso et al. 2013...
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Research: Disentangling the relationship between sex-biased gene expression and X-linkage
- Richard P. Meisel,
- John H. Malone,
- and Andrew G. Clark
Genome Res. July 2012 22: 1255-1265; Published in Advance April 12, 2012, doi:10.1101/gr.132100.111
...during later stages of spermatogenesis such as meiosis (Vibranovski et al. 2009; Gan et al. 2010). Furthermore, new genes with testis- or male-biased expression tend to be preferentially located on theX or Z chromosome inDrosophila (Zhang et al. 2010a), mammals (Zhang et al. 2010b), and chicken (Ellegren...

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