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The first lists show the most recent year where there is published total fertility rate (TFR) data ranked by sovereign states and dependencies, and are ordered by organization type – intergovernmental, governmental, or non-governmental organization that searched, organized, and published the data. Country ranking by most recent years lists:
Inbreeding is also used to reveal deleterious recessive alleles, which can then be eliminated through assortative breeding or through culling. In plant breeding, inbred lines are used as stocks for the creation of hybrid lines to make use of the effects of heterosis. Inbreeding in plants also occurs naturally in the form of self-pollination.
If there is a discrepancy between The World Factbook and a country's census data, the latter may be used instead. A ratio above 1, for example 1.1, means there are more males than females (1.1 males for every female). A ratio below 1, for example 0.8, means there are more females than males (0.8 males for every female).
Country Number of births (2023) India 23,219,489 China 8,899,881 Nigeria 7,509,758 Pakistan 6,882,058 Indonesia 4,482,359 Democratic Republic of the Congo 4,369,683
Wright introduced the inbreeding coefficient F as the correlation between uniting gametes in 1922, and most of the subsequent theory of inbreeding has been developed from his work. The definition of the inbreeding coefficient now most widely used is mathematically equivalent to that of Wright. [7]
Sex ratio by country for the population below age 15. Blue represents more boys, red more girls than the world average of 1.07 males/female. Sex ratio by country for total population. Blue represents more men and boys, red more women and girls than the world average of 1.01 males/female. Sex ratio by country for the over-65 population.
The article lists 233 countries and territories in crude birth rate. The first list is provided by Population Reference Bureau. [1] The second list is based on CIA World Factbook estimates for the year 2023. [2] Dependent territories and not fully recognized states might not be ranked.
This is a list of countries and other inhabited territories of the world by total population, based on estimates published by the United Nations in the 2024 revision of World Population Prospects. It presents population estimates from 1950 to the present.