title: Opportunity for selection in the parish of Tuna, Sweden.
abstract: This article is part of a series of studies on the opportunity for selection in Swedish populations. The study concerns women who, with some exceptions, were born during the first half of the 19th century. A modified form of Crow's index has been used to estimate the upper limit of natural selection. The average index for the period 1805-1850 was I = 1.136, which value falls within the limits of what has been found for the other Swedish populations that have been studied.
mesh_terms: D000367:Age Factors; D005260:Female; D005298:Fertility; D005313:Fetal Death; D005826:Genetics, Medical; D005828:Genetics, Population; D049671:History, 18th Century; D049672:History, 19th Century; D006801:Humans; D007226:Infant Mortality; D010298:Parity; D011247:Pregnancy; D011336:Probability; D012641:Selection, Genetic; D013548:Sweden