Title |
Sex ratio: a biological perspective of ‘Sex and the City’
|
---|---|
Published in |
Reproductive BioMedicine Online, January 2002
|
DOI | 10.1016/s1472-6483(10)61596-9 |
Pubmed ID | |
Authors |
Eugene Pergament, Pinar Bayrak Todydemir, Morris Fiddler |
Abstract |
The primary sex ratio in humans differs remarkably from the theoretically expected equality of 1:1, and may be as high as 170 males to 100 females. A number of environmental, physiological and genetic factors have been observed to impact on the primary sex ratio: sexual behaviour, variation in hormonal concentrations, natural disasters, environmental pollutants and timing of conception. Nevertheless, no biological mechanism or interaction of factors has suitably explained this phenomenon, or that of the prenatal vulnerability of the male, the suspected higher sex ratio in spontaneous abortion and the male excesses in adult diseases related to the intrauterine environment. Knowledge of the environmental effects and causes of natural variation in the primary sex ratio will make possible its manipulation, which will have public health implications as well as cultural and social consequences. |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Colombia | 1 | 4% |
Unknown | 23 | 96% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Bachelor | 4 | 17% |
Student > Ph. D. Student | 4 | 17% |
Student > Doctoral Student | 3 | 13% |
Researcher | 3 | 13% |
Other | 2 | 8% |
Other | 4 | 17% |
Unknown | 4 | 17% |
Readers by discipline | Count | As % |
---|---|---|
Agricultural and Biological Sciences | 6 | 25% |
Medicine and Dentistry | 4 | 17% |
Biochemistry, Genetics and Molecular Biology | 3 | 13% |
Social Sciences | 2 | 8% |
Nursing and Health Professions | 1 | 4% |
Other | 2 | 8% |
Unknown | 6 | 25% |