Results 11 to 20 of about 1,582,592 (296)

“Every day I grew stronger and stronger being there”.: empowerment through land-and art-based Peer Leader retreats with Indigenous and Northern young people

open access: yesInternational Journal of Circumpolar Health, 2022
Indigenous adolescents in Canada are among those shouldering the impacts of colonialism and racism. Peer approaches and art-and-land-based programming have demonstrated promise to support empowerment and well-being, yet little is known about their ...
Lesley Gittings   +8 more
doaj   +1 more source

Genetic variation and reproductive patterns in wetland mosses suggest efficient initial colonization of disturbed sites

open access: yesEcology and Evolution, 2021
To understand colonization processes, it is critical to fully assess the role of dispersal in shaping biogeographical patterns at the gene, individual, population, and community levels.
Lars Hedenäs   +3 more
doaj   +1 more source

Molecular Mechanism Underlying Derepressed Male Production in Hexaploid Persimmon

open access: yesFrontiers in Plant Science, 2020
Sex expression in plants is often flexible and contributes to the maintenance of genetic diversity within a species. In diploid persimmons (the genus Diospyros), the sexuality is controlled by the Y chromosome-encoded small-RNA gene, OGI, and its ...
Kanae Masuda   +6 more
doaj   +1 more source

Modulation of Sex Expression in Four Forms of Watermelon by Gibberellin, Ethephone and Silver Nitrate

open access: yesHorticultural Plant Journal, 2017
There has been no systematic research on the effect of plant growth regulators and silver nitrate treatments on the control of sex expression in watermelon. In this study, we tested sex expression responses of four watermelon forms (monoecism, gynoecism,
Jie ZHANG   +9 more
doaj   +1 more source

Positive selection underlies Faster-Z evolution of gene expression in birds. [PDF]

open access: yes, 2015
The elevated rate of evolution for genes on sex chromosomes compared to autosomes (Fast-X or Fast-Z evolution) can result either from positive selection in the heterogametic sex, or from non-adaptive consequences of reduced relative effective population ...
Dean, R   +4 more
core   +1 more source

Host sexual dimorphism and parasite adaptation [PDF]

open access: yes, 2012
In species with separate sexes, parasite prevalence and disease expression is often different between males and females. This effect has mainly been attributed to sex differences in host traits, such as immune response.
Duneau, D., Ebert, Dieter
core   +2 more sources

Immunolocalization of steroidogenic enzymes in the vaginal mucous of Galea spixii during the estrous cycle. [PDF]

open access: yes, 2017
BackgroundThe synthesis of sex steroids is controlled by several enzymes such as17α-hydroxylase cytochrome P450 (P450c17) catalyzing androgen synthesis and aromatase cytochrome P450 (P450arom) catalyzing estrogen synthesis, both of which must complex ...
Assis Neto, Antônio Chaves de   +5 more
core   +1 more source

A genetic basis for a postmeiotic X versus Y chromosome intragenomic conflict in the mouse. [PDF]

open access: yes, 2012
Intragenomic conflicts arise when a genetic element favours its own transmission to the detriment of others. Conflicts over sex chromosome transmission are expected to have influenced genome structure, gene regulation, and speciation.
Affara, Nabeel A.   +5 more
core   +9 more sources

Effect of different physio-chemical factors on sex expression and fruit yield in green-house cucumber

open access: yesAdvances in Horticultural Science, 2017
Male flower expression is considered an important aim in greenhouse cucumber breeding for creating paternal lines as a base for hybrid progeny. The study was carried out to evaluate the effects of different treatments on sex expression and fruit yield of
M. Golabadi, P. Golkar, A.-R. Eghtedari
doaj   +1 more source

Parallelism and divergence in immune responses: a comparison of expression levels in two lakes [PDF]

open access: yes, 2014
Question: How do immune phenotypes differ between infected and uninfected wild individuals, and is the effect the same in different populations? Organisms: Threespine stickleback (Gasterosteus aculeatus) from two lake populations on the island of North ...
Ando   +43 more
core   +2 more sources

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