Government Regulation of Sex and Sexuality: In Their Own Words
In: Reproductive Health Matters, Band 17, Heft 34, S. 108-118
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In: Reproductive Health Matters, Band 17, Heft 34, S. 108-118
SSRN
In: Reproductive Health Matters, Band 17, Heft 34: 108-118
SSRN
In: Journal of biosocial science: JBS, Band 9, Heft 2, S. 183-189
ISSN: 1469-7599
SummaryGuerrero (1975) has cited a wealth of direct data supporting the hypothesis that timing of insemination is related to the sex of the resulting zygote. It is argued here that if this hypothesis were correct, then parental coital rate would be associated with the sex of the resulting children. It is suggested here that empirical data support this inference and hence support the hypothesis.It is estimated that if Pmale (the probability that a zygote will be male) declines linearly across the fertile period, that decline is from about 0·57 to 0·45.
In: German and European studies
In: Geo kompakt Nr. 20
In: A Tonatiuh-Quinto Sol book
In: Environmental science and pollution research: ESPR
ISSN: 1614-7499
AbstractHoney bees are social insects that show division of labor and sexual dimorphism. Female honey bees differentiate in two different castes, queens or worker bees, while males are called drones. Worker bees have different tasks in the hive including collection of food, its processing, caring for brood, protecting the hive, or producing wax. The drones' only role is to mate with a virgin queen. Many studies have dealt with differences in physiology, behavior, and morphology of workers and drones. This is the first study that demonstrates differences in element accumulation and composition between workers and drones honey bees. Using inductively coupled plasma mass spectrometry, we found that worker honey bees have higher concentrations of most elements analyzed. Drones had higher concentrations of elements essential to bees, Na, P, S, Zn, Cu, and especially Se (2.2 × higher), which is known to be important for sperm quality and fertility in many animals. Until now higher Se content was not observed in male insects. These differences can be attributed to different environmental exposure, reproductive role of drones, but mostly to the food workers and drones consume. Worker bees feed on bee bread, which is rich in minerals. Drones are fed food pre-processed by worker bees.
In: Journal of developmental and physical disabilities, Band 34, Heft 3, S. 505-527
ISSN: 1573-3580
In: Deviant behavior: an interdisciplinary journal, Band 40, Heft 4, S. 435-444
ISSN: 1521-0456
In: IDS bulletin: transforming development knowledge, Band 48, Heft 1
ISSN: 1759-5436
In: Journal of human trafficking, Band 3, Heft 2, S. 93-106
ISSN: 2332-2713
In: NBER Working Paper No. w18810
SSRN
In: The Journal of men's studies, Band 17, Heft 3, S. 251-258
ISSN: 1060-8265, 1933-0251
In: Journal of political economy, Band 113, Heft 3, S. 518-550
ISSN: 1537-534X