How much boys and girls are in the world

ONS - UK population estimates. Image source, Getty Images. There are normally around male births for every female ones. It's all about evolution. The secret shame of having no sperm The success of sperm 'down to rhythm'. Sperm and timing.

Male sperm are the best swimmers but female sperm live longer. Survival in the womb. Related Topics. Women Sex. Published 30 January The largest gender gaps at the expense of girls are observed in sub-Saharan Africa. In Central African Republic and Chad, for example, only 61 girls and 62 girls, respectively, are enrolled in lower secondary school for every boys.

While both out-of-school adolescent boys and girls face social and economic marginalization, out-of-school girls are at greater risk of early and forced marriage and attendant health risks, including adolescent childbearing. Globally, girls comprised 49 per cent of the out-of-school population among children of lower secondary school age in , compared to 54 per cent in The global rate of out-of-school adolescent girls of lower secondary age is 16 per cent and for boys 15 per cent, but as expected, there is variation between regions.

Less than 10 per cent of adolescent boys and girls are out of school in North America, Europe and Central Asia and Latin America and the Caribbean while the rates are 36 per cent and 39 per cent for adolescent boys and girls, respectively, of lower secondary age in sub-Saharan Africa.

In Mali, the country with the highest overall lower secondary out-of-school rate worldwide 54 per cent , 49 per cent of lower secondary school age boys are out of school compared to 56 per cent of girls.

In Sierra Leone, nearly 1 in 2 girls and boys are. Assessing the relative achievements of girls and boys in secondary education provides insights into the quality of the education they receive as well as whether the education systems are meeting the needs of girls and boys equally.

Where gender disparities in learning outcomes are pronounced, a gender-sensitive pedagogical approach should be emphasized.

Results from the Programme for International Student Assessment PISA of year old students reveal that girls performed better than boys in reading literacy in every country participating in the assessment. Even while some countries seem to have a disproportionate share of boys, others have particularly high shares of baby girls. While there are still slightly more boys born than girls in these places — which are centered in sub-Saharan Africa — the sex ratios are nonetheless much lower than average.

Perhaps the best-known reason relates to the practice of sex-selective abortion , which has been identified in Asia, and in the Caucasus , as well. The ability to determine fetal sex, along with strong son preferences, accounts in large part for the high shares of boys in many countries in these regions.

The desire to limit family size, either due to government regulations as in China, or due to global social and economic changes that have reduced the need for large families, seems to further contribute to sex-selective abortion and a dearth of baby girls.

But this is only one of myriad factors that may be affecting the sex ratio at birth. Some research suggests that the share of newborn boys declines with older parents , and that the high share of girls in Sub-Saharan Africa may be linked to the practice of polygamy multiple wives. What do these two phenomena have in common?

Researchers hypothesize that both situations are associated with less frequent intercourse. There are ,, or The percentage of the female population is India has the highest numbers of exceed males population of In India, the male to female ratio has increased from This ratio is projected to decline at With about boys born for every girls, India has the world's 5th most skewed sex ratio at birth after China, Azerbaijan, Viet Nam, and Armenia.

During this ratio was The males to females ratio is at the highest point of