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Sex, sex chromosomes and gene expression [PDF]
BMC Biology, 2011 The X chromosome has fewer testis-specific genes than autosomes in many species. This bias is commonly attributed to X inactivation in spermatogenesis but a recent paper in BMC Biology provides evidence against X inactivation in Drosophila and proposes ...
Wu Chung-I, Lu Xuemei
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SEX CHROMOSOMES IN AMNIOTA [PDF]
Evolution, 1957 During the past 25 years the chromnosomal conditions in Vertebrates have been the subject of a great many investigations. With some justification it has been hoped that such work might add to our present knowledge of the evolutionary relation between the different classes of Vertebrates and, in this connection, special attention has been given to the ...
R Matthey, Janny M. van Brink
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Robertsonian fusion triggers recombination suppression on sex chromosomes in Coleonyx geckos
Scientific Reports, 2023 The classical hypothesis proposes that the lack of recombination on sex chromosomes arises due to selection for linkage between a sex-determining locus and sexually antagonistic loci, primarily facilitated by inversions.
Artem Lisachov +10 more
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Cells, 2023 Geckos are an excellent group to study the evolution of sex determination, as they possess a remarkable variability ranging from a complete absence of sex chromosomes to highly differentiated sex chromosomes.
Eleonora Pensabene +3 more
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THE VARIABILITY IS IN THE SEX CHROMOSOMES [PDF]
Evolution, 2013 Sex differences in the mean trait expression are well documented, not only for traits that are directly associated with reproduction. Less is known about how the variability of traits differs between males and females. In species with sex chromosomes and dosage compensation, the heterogametic sex is expected to show larger trait variability ("sex ...
Reinhold, Klaus, Engqvist, Leif
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Sex Chromosome Evolution in Muscid Flies
G3: Genes, Genomes, Genetics, 2020 Sex chromosomes and sex determining genes can evolve fast, with the sex-linked chromosomes often differing between closely related species. Population genetics theory has been developed and tested to explain the rapid evolution of sex chromosomes and sex
Richard P. Meisel +5 more
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B chromosomes have a functional effect on female sex determination in Lake Victoria cichlid fishes. [PDF]
PLoS Genetics, 2011 The endemic cichlid fishes in Lake Victoria are a model system for speciation through adaptive radiation. Although the evolution of the sex-determination system may also play a role in speciation, little is known about the sex-determination system of ...
Kohta Yoshida +10 more
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Cold Spring Harbor Perspectives in Biology, 2014 Sex chromosome drivers are selfish elements that subvert Mendel's first law of segregation and therefore are overrepresented among the products of meiosis. The sex-biased progeny produced then fuels an extended genetic conflict between the driver and the rest of the genome.
Helleu, Quentin +2 more
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Comparative sex chromosome genomics in snakes: differentiation, evolutionary strata, and lack of global dosage compensation. [PDF]
PLoS Biology, 2013 Snakes exhibit genetic sex determination, with female heterogametic sex chromosomes (ZZ males, ZW females). Extensive cytogenetic work has suggested that the level of sex chromosome heteromorphism varies among species, with Boidae having entirely ...
Beatriz Vicoso +4 more
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