A sex ratio is the ratio of males to females in a population. As explained by Fisher's principle, for evolutionary reasons this is typically about 1:1...

human sex ratio is the ratio of males to females in a population in the context of anthropology and demography. In humans, the natural sex ratio at birth...

The human sex ratio is the comparative number of males with respect to each female in a population. This is a list of sex ratios by country or region....

Sex ratio is used to describe the ratio of females to males in a population. In India, the sex ratio has been estimated via a number of methods and data...

the census data in China has recorded a significant imbalance in the sex ratio toward the male population, meaning there are fewer women than men. This...

Internet Archive. Hamilton, W. D. (1967). "Extraordinary Sex Ratios: A Sex-ratio Theory for Sex Linkage and Inbreeding Has New Implications in Cytogenetics...

The child sex ratio in India is defined as the number of females per thousand males in the age group 0–6 years in a human population. Thus it is equal...

Fisher developed an explanation, known as Fisher's principle, of why sex ratios in many animals are 1:1. If there were 10 times more females in a population...

around the same time or slightly later in India. Sex-selective abortion affects the human sex ratio—the relative number of males to females in a given...

the evolutionary biology of sexual reproduction, operational sex ratio (OSR) is the ratio of sexually competing males that are ready to mate to sexually...

overall decline in preference for sons in the time period. The natural sex ratio is assumed to be between 103 and 107 males per 100 females, and any number...

Fisher's principle is an evolutionary model that explains why the sex ratio of most species that produce offspring through sexual reproduction is approximately...

being the poorest districts in terms of sex-ratio, depicting a negative-correlation among literacy and sex-ratio in this case. The districts of Srawasti...

affects the sex ratio of the sperm that reach the egg. Sex-specific mortality of embryos also occurs. Aristotle believed incorrectly that the sex of an infant...

(mathematics) Scale (map) Scale (ratio) Sex ratio Superparticular ratio Slope New International Encyclopedia "Ratios". www.mathsisfun.com. Retrieved 2020-08-22...

average for the sex ratio shows an increase from 933 in 2001 to 940 in 2011, the 2011 census shows a sharp decline in the child sex ratio, the number of...

ZW sex-determination system. Heterogametic sex determination systems typically have an approximately equal sex ratio, with distributions of sexes conforming...

diversity of the nation of India. The sex ratio was 944 females for 1000 males in 2016, and 940 per 1000 in 2011. This ratio has been showing an upwards trend...

attitudes towards son preference have changed, normalizing the sex ratio and lowering the number of sex-selective abortions. Additionally, during the entire 20th...

others of whom were adopted abroad. Over time, this skewed the country's sex ratio toward men and created a generation of "missing women". However, the policy...

Pierre-Simon Laplace (1770s), in analyzing the human sex ratio at birth; see § Human sex ratio. Paul Meehl has argued that the epistemological importance...

female offspring in response to environmental conditions. Sex ratio behaviour is the sex ratio response of a female in various conditions. Mutation accumulation...

Population Fund, the reasons behind sex selection are due to three factors and provide an understanding for sex ratio imbalances as well as to project future...

ISSN 1365-294X. PMID 20666996. S2CID 3213349. Yanega, D. (1996) Sex ratio and sex allocation in sweat bees (Hymenoptera: Halictidae). J. Kansas Ent...

The sex ratio of the different administrative divisions of China has been the subject of academic study because of a high imbalance in births since the...

population. The sex ratio in the state is one of the most balanced in India with 991 females per 1,000 males, as is the child sex-ratio with 964 females...

The digit ratio is the ratio taken of the lengths of different digits or fingers on a hand. In modern sciences, the 2D:4D ratio has become the most commonly...

male sex ratio; however, adding retinoic acid to the culture can bring this ratio back to normal. A second theory is that the male-biased sex ratio may...

a sex ratio of 892 females/1000 males in year 2011 which was least among all tehsils of Anupgarh District and Raisinghnagar had hightest sex ratio of...

It found the sex ratio for Indonesia is 102.34, which means that for every 100 females, there are 102-103 males. The largest sex ratio is in Papua with...