Results 41 to 50 of about 489,368 (321)

Transcriptomic thermal plasticity underlying gonadal development in a turtle with ZZ/ZW sex chromosomes despite canalized genotypic sex determination

open access: yesEcology and Evolution, 2023
Understanding genome‐wide responses to environmental conditions during embryogenesis is essential for discerning the evolution of developmental plasticity and canalization, two processes generating phenotypic variation targeted by natural selection. Here,
Thea B. Gessler   +2 more
doaj   +1 more source

Demographic and genetic consequences of disturbed sex determination. [PDF]

open access: yes, 2017
During sex determination, genetic and/or environmental factors determine the cascade of processes of gonad development. Many organisms, therefore, have a developmental window in which their sex determination can be sensitive to, for example, unusual ...
Wedekind, C.
core   +1 more source

Evidence for a genetic sex determination in Cnidaria, the Mediterranean red coral (Corallium rubrum) [PDF]

open access: yesRoyal Society Open Science, 2017
Sexual reproduction is widespread among eukaryotes, and the sex-determining processes vary greatly among species. While genetic sex determination (GSD) has been intensively described in bilaterian species, no example has yet been recorded among non ...
M. Pratlong   +9 more
doaj   +1 more source

The Y chromosome sequence of the channel catfish suggests novel sex determination mechanisms in teleost fish

open access: yesBMC Biology, 2019
Background Sex determination mechanisms in teleost fish broadly differ from mammals and birds, with sex chromosomes that are far less differentiated and recombination often occurring along the length of the X and Y chromosomes, posing major challenges ...
Lisui Bao   +20 more
doaj   +1 more source

Oxidative stress parameters in plasma of Huntington's disease patients, asymptomatic Huntington's disease gene carriers and healthy subjects : a cross-sectional study [PDF]

open access: yes, 2007
BACKGROUND : Animal data and postmortem studies suggest a role of oxidative stress in the Huntington's disease (HD), but in vivo human studies have been scarce.
Babić, Tomislav   +5 more
core   +1 more source

Impact of Climate Change on Regulation of Genes Involved in Sex Determination and Fruit Production in Cucumber

open access: yesPlants, 2023
Environmental changes, both natural and anthropogenic, mainly related to rising temperatures and water scarcity, are clearly visible around the world. Climate change is important for crop production and is a major issue for the growth and productivity of
Aparna   +3 more
doaj   +1 more source

Pattern Does Not Equal Process: Exactly When Is Sex Environmentally Determined?

open access: yesThe American Naturalist, 2003
Of prime importance in evolutionary biology are the description of pattern and explanations of process. Frequently, however, multiple processes can explain a given pattern. Such cases require experimental protocols or research criteria to distinguish among alternatives so pattern can be critically assigned to process.
Adams, Dean   +2 more
openaire   +4 more sources

Sex determination in Bonellia viridis (Echiura : Bonelliidae) : population dynamics and evolution [PDF]

open access: yes, 2005
In the echiuran worm Bonellia viridis Rolando, the vast majority of sexually undifferentiated larvae metamorphose into dwarf males that live inside the female when exposed to females, but differentiate into females when developing in the absence of ...
Agius   +28 more
core   +1 more source

Sex determination in the Squalius alburnoides complex: an initial characterization of sex cascade elements in the context of a hybrid polyploid genome. [PDF]

open access: yesPLoS ONE, 2009
BACKGROUND:Sex determination processes vary widely among different vertebrate taxa, but no group offers as much diversity for the study of the evolution of sex determination as teleost fish. However, the knowledge about sex determination gene cascades is
Irene Pala   +3 more
doaj   +1 more source

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