Results 31 to 40 of about 4,675,098 (246)
PLoS Biology, 2016 The evolution of heteromorphic sex chromosomes has repeatedly resulted in the evolution of sex chromosome-specific forms of regulation, including sex chromosome dosage compensation in the soma and meiotic sex chromosome inactivation in the germline.
Emily L Landeen +4 more
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Accelerated adaptive evolution on a newly formed X chromosome.
PLoS Biology, 2009 Sex chromosomes originated from ordinary autosomes, and their evolution is characterized by continuous gene loss from the ancestral Y chromosome. Here, we document a new feature of sex chromosome evolution: bursts of adaptive fixations on a newly formed ...
Doris Bachtrog +2 more
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Sex Chromosomes and the Evolution of Sexual Dimorphism [PDF]
Evolution, 1984 The evolutionary significance of sex chromosomes has generally been associated with their effect on sex determination (see Mittwoch, 1967; Ohno 1967, 1979 for review). Here I will evaluate the idea that sex chromosomes also play an important role in the evolution of sexually dimorphic traits.
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BMC Biology, 2019 Background Sex chromosome evolution is a dynamic process that can proceed at varying rates across lineages. For example, different chromosomes can be sex-linked between closely related species, whereas other sex chromosomes have been conserved for > 100 ...
Richard P. Meisel +2 more
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Chromosome studies in the genus Pterotricha (Gnaphosidae) from Turkey [PDF]
Archives of Biological Sciences, 2014 The diploid chromosome set and male meiosis of two spider species belonging to the family Gnaphosidae from Turkey are described. Both Pterotricha kochi and Pterotricha lesserti exhibited the diploid chromosome number as 2n♂=22 and X1X20 sex ...
Kumbiçak Zübeyde, Kumbiçak Ümit
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EVOLUTION OF EXTREMELY COMPLICATED SEX CHROMOSOME SYSTEMS IN BLAPS (COLEOPTERA) [PDF]
, 1974 EVOLUTION OF EXTREMELY COMPLICATED SEX CHROMOSOME SYSTEMS IN BLAPS (COLEOPTERA)EVOLUTION OF EXTREMELY COMPLICATED SEX CHROMOSOME SYSTEMS IN BLAPS ...
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BMC Biology, 2023 Background The Western mosquitofish, Gambusia affinis, is a model for sex chromosome organization and evolution of female heterogamety. We previously identified a G. affinis female-specific marker, orthologous to the aminomethyl transferase (amt) gene of
Stefan Müller +7 more
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Spermatogenesis and the Evolution of Mammalian Sex Chromosomes [PDF]
Trends in Genetics, 2018 Developmental constraint and sexual conflict shape the evolution of heteromorphic sex chromosomes. These contrasting forces are perhaps strongest during spermatogenesis in species with XY males. In this review, we consider how the unique regulatory environment and selective pressures of spermatogenesis interact to impact sex chromosome evolution in ...
Erica L, Larson +2 more
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A model system for study of sex chromosome effects on sexually dimorphic neural and behavioral traits [PDF]
, 2002 We tested the hypothesis that genes encoded on the sex chromosomes play a direct role in sexual differentiation of brain and behavior. We used mice in which the testis-determining gene (Sry) was moved from the Y chromosome to an autosome (by deletion of ...
Robin Lovell-Badge +29 more
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Frontiers in Plant Science, 2022 Garden asparagus (Asparagus officinalis, 2n = 2x = 20 chromosomes) is an important dioecious vegetable crop and a model species for studying sex chromosome formation and evolution.
Chen You +8 more
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