Results 11 to 20 of about 4,675,098 (246)

Does polyploidy inhibit sex chromosome evolution in angiosperms?

Frontiers in Plant Science, 2022
Dioecy is rare in flowering plants (5–6% of species), but is often controlled genetically by sex-linked regions (SLRs). It has so far been unclear whether, polyploidy affects sex chromosome evolution, as it does in animals, though polyploidy is quite ...
Li He, Elvira Hörandl
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Evolution and conservation of Characidium sex chromosomes [PDF]

Heredity, 2017
Fish species exhibit substantial variation in the degree of genetic differentiation between sex chromosome pairs, and therefore offer the opportunity to study the full range of sex chromosome evolution. We used restriction-site associated DNA sequencing (RAD-seq) to study the sex chromosomes of Characidium gomesi, a species with conspicuous ...
Utsunomia, Ricardo, Scacchetti, Priscilla C, Hermida, Miguel, Fernandez-Cebrian, Raquel, Taboada, Xoana, Fernandez, Carlos, Bekaert, Michaël, Mendes, Natalia J, Robledo, Diego, Mank, Judith E, Taggart, John, Oliveira, Claudio, Foresti, Fausto, Martinez, Paulino   +13 more
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Evolutionary pattern of karyotypes and meiosis in pholcid spiders (Araneae: Pholcidae): implications for reconstructing chromosome evolution of araneomorph spiders

BMC Ecology and Evolution, 2021
Background Despite progress in genomic analysis of spiders, their chromosome evolution is not satisfactorily understood. Most information on spider chromosomes concerns the most diversified clade, entelegyne araneomorphs.
Ivalú M. Ávila Herrera, Jiří Král, Markéta Pastuchová, Martin Forman, Jana Musilová, Tereza Kořínková, František Šťáhlavský, Magda Zrzavá, Petr Nguyen, Pavel Just, Charles R. Haddad, Matyáš Hiřman, Martina Koubová, David Sadílek, Bernhard A. Huber   +14 more
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Ecology and the evolution of sex chromosomes

Journal of Evolutionary Biology, 2021
AbstractSex chromosomes are common features of animal genomes, often carrying a sex determination gene responsible for initiating the development of sexually dimorphic traits. The specific chromosome that serves as the sex chromosome differs across taxa as a result of fusions between sex chromosomes and autosomes, along with sex chromosome turnover ...
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Early events in the evolution of the Silene latifolia Y chromosome: Male specialization and recombination arrest [PDF]

, 2007
Understanding the origin and evolution of sex chromosomes requires studying recently evolved X-Y chromosome systems such as those in some flowering plants.
Georgiev, Sevdalin, Zluvova, Jitka, Janousek, Bohuslav, Georgiev, S., Vyskot, Boris, Negrutiu, Loan, Negrutiu, Ioan, Charlesworth, D., Charlesworth, Deborah   +8 more
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Evolutionary strata on the X chromosomes of the dioecious plant Silene latifolia: Evidence from new sex-linked genes [PDF]

, 2007
Despite its recent evolutionary origin, the sex chromosome system of the plant Silene latifolia shows signs of progressive suppression of recombination having created evolutionary strata of different X-Y divergence on sex chromosomes. However, even after
Bergero, Roberta, Forrest, Alan, Kamau, Esther, Charlesworth, Deborah   +3 more
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A specific insertion of a solo-LTR characterizes the Y chromosome of Bryonia dioica (Cucurbitaceae) [PDF]

, 2010
Background: Relatively few species of flowering plants are dioecious and even fewer are known to have sex chromosomes. Current theory posits that homomorphic sex chromosomes, such as found in Bryonia dioica (Cucurbitaceae), offer insight into the early ...
Silber, Martina V., Renner Susanne S, Ryan K Oyama, Oyama Ryan K, Susanne S Renner, Renner, Susanne S., Oyama, Ryan K., Silber Martina V, Martina V Silber   +8 more
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Molecular differentiation markers for the analyses of sex determination diversity and sex chromosome evolution in fish

, 2016
Molecular differentiation markers for the analyses of sex determination diversity and sex chromosome evolution in fish. 21.
Shories, S., Guiguen, Yann, Kneitz, S., Kottler, V.A., Nanda, I., Postlethwait, J. H., Volff, Jean-Nicolas, Anderson, Jennifer, Schartl, M., Roco, A., Schmid, M.   +10 more
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Independent stratum formation on the avian sex chromosomes reveals inter-chromosomal gene conversion and predominance of purifying selection on the w chromosome [PDF]

, 2014
We used a comparative approach spanning three species and 90 million years to study the evolutionary history of the avian sex chromosomes. Using whole transcriptomes, we assembled the largest cross-species dataset of W-linked coding content to date.
Wright, Alison E, Harrison, Peter W, Mank, JE, Wright, AE, Montgomery, SH, Mank, Judith E, Pointer, Marie A, Harrison, PW, Pointer, MA, Montgomery, Stephen H   +9 more
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Sex chromosome evolution: A ‘missing link’ in the evolution of sex chromosomes [PDF]

Heredity, 2008
Sex chromosomes have evolved independently in all major lineages of eukaryotes, and although the precise genetic mechanism for their formation may differ, it is hypothesized that these sex chromosomes began as ‘ordinary’ autosomes. With their publication of a genetic map for the octoploid strawberry, Fragaria virginiana, Spigler et al.
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