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Twinning Rates and Seasonal Changes in Görlitz, Germany, from 1611 to 1860

Published online by Cambridge University Press:  01 August 2014

J. Richter ,
T. Miura ,
I. Nakamura  and
K. Nonaka
J. Richter
Affiliation:
Youth Health Counseling Center, City of Görlitz, GDR, Tokyo, Japan
T. Miura*
Affiliation:
Department of Hygiene, Teikyo University School of Medicine, Tokyo, Japan
I. Nakamura
Affiliation:
Department of Hygiene, Teikyo University School of Medicine, Tokyo, Japan
K. Nonaka
Affiliation:
Department of Hygiene, Teikyo University School of Medicine, Tokyo, Japan
*
Department of Hygiene, Teikyo University School of Medicine, Itabashi-ku, Tokyo 173, Japan

Abstract

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Old-age twinning rates were evaluated over a period of 250 years (1611-1860), from 80,256 parish records of baptism in a church office in Görlitz, East Germany. Two periods with high and two periods with low twinning rates were observed. Twinning rates were relatively stable in spring and fall, but varied greatly in winter and summer.

Keywords

Twinning rateSecular changeSeasonal variation
Type
Research Article
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 33 , Issue 1 , January 1984 , pp. 121 - 124
Copyright
Copyright © The International Society for Twin Studies 1984

References

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