Results 21 to 30 of about 1,541,356 (256)

Sex determination in mythology and history [PDF]

open access: yes, 2005
The history of ideas on how the sexes became divided spans at least three thousand years. The biblical account of the origin of Eve, and the opinions of the philosophers of classical Greece, have unexpected bearings on present-day ideas.
Mittwoch,Ursula, Mittwoch, U
core   +1 more source

Early events in the evolution of the Silene latifolia Y chromosome: Male specialization and recombination arrest [PDF]

open access: yes, 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   +8 more
core   +1 more source

Snake W Sex Chromosome: The Shadow of Ancestral Amniote Super-Sex Chromosome

open access: yesCells, 2020
Heteromorphic sex chromosomes, particularly the ZZ/ZW sex chromosome system of birds and some reptiles, undergo evolutionary dynamics distinct from those of autosomes. The W sex chromosome is a unique karyological member of this heteromorphic pair, which
Worapong Singchat   +6 more
doaj   +1 more source

Conflict over condition-dependent sex allocation can lead to mixed sex-determination systems [PDF]

open access: yes, 2014
Theory suggests that genetic conflicts drive turnovers between sex-determining mechanisms, yet these studies only apply to cases where sex allocation is independent of environment or condition.
Kuijper, B   +3 more
core   +2 more sources

A trans-species missense SNP in Amhr2 is associated with sex determination in the tiger pufferfish, Takifugu rubripes (fugu). [PDF]

open access: yesPLoS Genetics, 2012
Heterogametic sex chromosomes have evolved independently in various lineages of vertebrates. Such sex chromosome pairs often contain nonrecombining regions, with one of the chromosomes harboring a master sex-determining (SD) gene. It is hypothesized that
Takashi Kamiya   +15 more
doaj   +1 more source

Transitions in sex determination and sex chromosomes across vertebrate species [PDF]

open access: yes, 2018
Despite the prevalence of sexual reproduction across eukaryotes, there is a remarkable diversity of sex determination mechanisms. The underlying causes of this diversity remain unclear, and it is unknown if there are convergent trends in the ...
Pennell, Matthew W.,   +11 more
core   +2 more sources

Evolution and conservation of Characidium sex chromosomes [PDF]

open access: yes, 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 (
Robledo, Diego   +55 more
core   +1 more source

Telomere disruption results in non-random formation of de novo dicentric chromosomes involving acrocentric human chromosomes [PDF]

open access: yes, 2010
Copyright: © 2010 Stimpson et al.Genome rearrangement often produces chromosomes with two centromeres (dicentrics) that are inherently unstable because of bridge formation and breakage during cell division. However, mammalian dicentrics, and particularly
Sullivan, Beth A.   +35 more
core   +2 more sources

Microsatellite distribution on sex chromosomes at different stages of heteromorphism and heterochromatinization in two lizard species (Squamata: Eublepharidae: Coleonyx elegans and Lacertidae: Eremias velox)

open access: yesBMC Genetics, 2011
Background The accumulation of repetitive sequences such as microsatellites during the differentiation of sex chromosomes has not been studied in most squamate reptiles (lizards, amphisbaenians and snakes), a group which has a large diversity of sex ...
Kratochvíl Lukáš   +2 more
doaj   +1 more source

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