Hostname: page-component-78c5997874-m6dg7 Total loading time: 0 Render date: 2024-11-19T23:07:21.119Z Has data issue: false hasContentIssue false

Human Twinning Rate in Iniö in the South-West of Finland

Published online by Cambridge University Press:  01 August 2014

Rolf Kroneld*
Affiliation:
Department of Public Health, University of Turku, Finland
*
Department of Public Health, Lemminkäisenkatu 2, SF-20520 Turku, Finland

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

A secular demographic study on the Iniö Island in SW Finland shows an even stronger decline of twinning rates than in the Åland Islands and the rest of the archipelago. Twinning rates in Iniö declined, in fact from about 30‰ to less than 10‰.

Type
Research Article
Copyright
Copyright © The International Society for Twin Studies 1988

References

REFERENCES

1.Bonnevie, K, Svedrup, A (1926): Hereditary predispositions to dizygotic twin-births in Norwegian peasant families. I Genet 16:125188.Google Scholar
2.Eriksson, AW (1962): Variations in the human twinning rate. Acta Genet (Basel) 12:242250.Google Scholar
3.Eriksson, AW (1973): Human twinning in and around the Åland Islands. Comment Biol 64:1159.Google Scholar
4.Eriksson, AW, Eskola, MR, Fellman, IU (1976): Retrospective studies on the twinning rate in Scandinavia. Acta Genet Med Gemellol 25:2935.Google Scholar
5.Iniö Church Registers (1723–): Church registers regarding baptism, marriages, all borne children, age of mothers, burial. The Commune of Iniö Islands, Finland.Google Scholar
6.Tax and Census Lists (1463–): Tax lists, census lists with the names of taxable subjects. Åbo Regional Archive (ÅLM), Turku, Finland.Google Scholar
7.Tabellverket, (1749–): Annual reports on the state of the population. Finnish Central State Archiv, Helsinki, Finland.Google Scholar
8.Scragg, RFR, Walsh, RI (1970): A high incidence of multiple births in one area of New Britain. Hum Biol 42:422449.Google Scholar
9.Nylander, PPS (1970): The inheritance of DZ twinning. A study of 18,737 maternities in Ibadan, Western Nigeria. Acta Genet Med Gemellol 19:3639.Google Scholar
10.Stevenson, CC (1971): Genetic studies of human twinning. Thesis, Indianapolis: Indiana University.Google Scholar