Results 31 to 40 of about 489,368 (321)

Sex-limited chromosomes and non-reproductive traits

open access: yesBMC Biology, 2022
Sex chromosomes are typically viewed as having originated from a pair of autosomes, and differentiated as the sex-limited chromosome (e.g. Y) has degenerated by losing most genes through cessation of recombination.
Aivars Cīrulis   +2 more
doaj   +1 more source

Evolutionary and demographic consequences of temperature-induced masculinization under climate warming: the effects of mate choice

open access: yesBMC Ecology and Evolution, 2021
Background One of the dangers of global climate change to wildlife is distorting sex ratios by temperature-induced sex reversals in populations where sex determination is not exclusively genetic, potentially leading to population collapse and/or sex ...
Edina Nemesházi   +2 more
doaj   +1 more source

Prediction of sex-determination mechanisms in avian primordial germ cells using RNA-seq analysis

open access: yesScientific Reports, 2022
In birds, sex is determined through cell-autonomous mechanisms and various factors, such as the dosage of DMRT1. While the sex-determination mechanism in gonads is well known, the mechanism in germ cells remains unclear.
Kennosuke Ichikawa   +5 more
doaj   +1 more source

A multi-modal study into students’ timing and learning regulation: time is ticking [PDF]

open access: yes, 2018
Purpose This empirical study aims to demonstrate how the combination of trace data derived from technology-enhanced learning environments and self-response survey data can contribute to the investigation of self-regulated learning processes. Design/
Nguyen, Quan   +2 more
core   +6 more sources

Sex Determination of Dry Human Mandible Using Metrical Parameters in Mahakaushal Region of Madhya Pradesh, India: A Cross-sectional Study [PDF]

open access: yesInternational Journal of Anatomy Radiology and Surgery, 2021
Introduction: Determination of sex and age from skeletal remains is not only important for forensic science but also for Anatomy, Forensic Odontology, Anthropology and Palaeontology examination. Mandible next to the pelvis in human remains help us in
RAJESHWARI KANWAR   +3 more
doaj   +1 more source

Caste-biased Expression of fem and Amdsx Genes in Apis mellifera ligustica (Hymenoptera: Apidae)

open access: yesSociobiology, 2021
Sex determination and caste differentiation are two crucial processes for morphology building in honeybees. It is unclear whether there is an interaction between these two processes.
Lu-Xia Pan, Fu-Ping Cheng, Zi-Long Wang
doaj   +1 more source

Sex determination in mammalian germ cells

open access: yesAsian Journal of Andrology, 2015
Germ cells are the precursors of the sperm and oocytes and hence are critical for survival of the species. In mammals, they are specified during fetal life, migrate to the developing gonads and then undergo a critical period during which they are ...
Cassy M Spiller, Josephine Bowles
doaj   +1 more source

Sex determination in honeybees: two separate mechanisms induce and maintain the female pathway. [PDF]

open access: yesPLoS Biology, 2009
Organisms have evolved a bewildering diversity of mechanisms to generate the two sexes. The honeybee (Apis mellifera) employs an interesting system in which sex is determined by heterozygosity at a single locus (the Sex Determination Locus) harbouring ...
Tanja Gempe   +5 more
doaj   +1 more source

Discovery of Sexual Dimorphisms in Metabolic and Genetic Biomarkers [PDF]

open access: yes, 2007
Metabolomic profiling and the integration of whole-genome genetic association data has proven to be a powerful tool to comprehensively explore gene regulatory networks and to investigate the effects of genetic variation at the molecular level.
Mittelstrass, Kirstin   +17 more
core   +2 more sources

Cortisol-induced masculinization: does thermal stress affect gonadal fate in pejerrey, a teleost fish with temperature-dependent sex determination? [PDF]

open access: yesPLoS ONE, 2009
BACKGROUND: Gonadal fate in many reptiles, fish, and amphibians is modulated by the temperature experienced during a critical period early in life (temperature-dependent sex determination; TSD).
Ricardo S Hattori   +9 more
doaj   +1 more source

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